Lead Opinion
Defendant Department of Transportation (DOT) appeals as of right from an order denying its motion for summary disposition on grounds of governmental immunity regarding plaintiffs’ trespass-nuisance claim. Plaintiffs cross-appeal to challenge the grant of summary disposition to both defendants on plaintiffs’ inverse-condemnation claim. We reverse the trial court’s order relating to the trespass-nuisance claim but affirm in all other respects. Of particular note is our holding that there is no trespass-nuisance exception to the doctrine of sovereign immunity.
Plaintiffs are engaged in the commercial production of blueberries in Ottawa and Muskegon counties. Plaintiffs own or lease property that is adjacent to highways or primary county roads. DOT contracts with county road commissions, including defendant Ottawa County Road Commission (Ottawa County), to maintain the highways and county roads during the winter,
Plaintiffs sued DOT and Ottawa County, alleging inverse condemnation. Plaintiffs also raised a claim of trespass-nuisance against DOT. The trial court granted summary disposition under MCR 2.116(C)(10) to DOT and Ottawa County on the inverse-condemnation claim, finding that plaintiffs failed to present evidence to establish that their injury was “of a unique or peculiar character different from the effects experienced by all similarly situated property owners.” The trial court concluded that plaintiffs were not permanently deprived of their property and that “the incidental entry of road salt onto Plaintiffs’ properties has only rendered the growing of blueberries uneconomical.” The trial court further found that there was no “direct and immediate intrusion” onto plaintiffs’ property in this case.
The trial court subsequently denied DOT’s motion for summary disposition under MCR 2.116(C)(7) (governmental immunity) on the trespass-nuisance claim and instead determined that plaintiffs were entitled to summary disposition on this claim under MCR 2.116(C)(10). The trial court followed Hadfield v Oakland Co Drain Comm’r,
On appeal, DOT argues that the trial court erred by denying its motion for summary disposition on the trespass-nuisance claim because it is entitled to immunity with regard to this claim.
This Court reviews de novo a trial court’s grant of summary disposition. Maiden v Rozwood,
Disposition of the present issue requires this Court to resolve the question whether the tort of trespass-nuisance is an
MCL 691.1407(1) provides:
Except as otherwise provided in this act, a governmental agency is immune from tort liability if the governmental agency is engaged in the exercise or discharge of a governmental function. Except as otherwise provided in this act, this act does not modify or restrict the immunity of the state from tort liability as it existed before July 1, 1965, which immunity is affirmed.
“Absent a statutory exception, a governmental agency is immune from tort liability when it exercises or discharges a governmental function.” Maskery v Univ of Mich Bd of Regents,
means a municipal corporation, county, county road commission, school district, community college district, port district, metropolitan district, or transportation authority or a combination of 2 or more of these when acting jointly; a district or authority authorized by law or formed by 1 or more political subdivisions; or an agency, department, court, board, or council of a political subdivision. [MCL 691.1401(b).]
The statutory exceptions to governmental immunity are failure to maintain highways, MCL 691.1402(1); the negligent operation of government-owned vehicles, MCL 691.1405; public-building defects, MCL 691.1406; the performance of proprietary functions, MCL 691.1413; and the ownership or operation of certain governmental hospitals, MCL 691.1407(4). MCL 691.1417 et seq. also provides for liability for sewage-disposal-system events. None of these exceptions is relevant to the present case.
Previously, the Supreme Court held that a limited, nonstatutory trespass-nuisance exception existed to governmental immunity. Hadfield,
Significantly, however, the Pohutski Court, in reaching its conclusions, relied on the word “state” from the second sentence of MCL 691.1407(1). Id. at 688-689. Again, this sentence states: “Except as otherwise provided in this act, this act does not modify or restrict the immunity of the state from tort liability as it existed before July 1, 1965, which immunity is affirmed.” (Emphasis added.) The Pohutski Court concluded that because cities, and not the state as defined in MCL 691.1401(c), were involved in that case, the
The Pohutski Court stated:
Because the state is not involved as a party in these cases, we need not explicate fully the meaning of the second sentence of [MCL 691.1407(1)]. We agree with Justice Griffin [in his partial dissent in Li v Feldt (After Remand),434 Mich 584 , 599;456 NW2d 55 (1990), overruled in part by Pohutski] that, at most, the language of the second sentence requires an historical analysis of the state’s sovereign immunity, but we have no occasion to undertake such an analysis here. Therefore, contrary to the dissent’s assertion, we make no determinations regarding common-law exceptions to the state’s governmental immunity. [.Pohutski,465 Mich at 688 n 1 (emphasis in original).]
Here, the “state,” as defined in MCL 691.1401(c), is indeed involved. The question, then, is whether the second sentence of MCL 691.1407(1) allows plaintiffs to pursue the instant lawsuit or whether DOT is protected by governmental immunity.
We find no basis to conclude that a trespass-nuisance exception exists for claims against the state. Plaintiffs argue that the second sentence of MCL 691.1407(1) preserves a common-law exception to governmental immunity for trespass-nuisance, but they cite only Hadfield to support this position. Hadfield and the pertinent cases cited therein, however, did not address “sovereign immunity” (i.e., the immunity of the state). See Pohutski,
“So far as the State itself is concerned, the doctrine of sovereign immunity as it presently exists in Michigan is a creature of the legislature. The doctrine has been modified by the legislature, abolished by the legislature, reestablished by the legislature, and further modified by the legislature.” [McDowell v State Hwy Comm’r, 365 Mich 268, 271;112 NW2d 491 (1961), quoting the brief of the Attorney General (emphasis added).]
The Legislature has not seen fit to expand upon this “creature of the legislature” by providing a trespass-nuisance exception to governmental immunity for claims against the state, and there is simply no indication that a common-law trespass-nuisance exception to sovereign immunity was in effect at the time of the enactment of MCL 691.1407(1).
In Ross v Consumers Power Co (On Rehearing),
The first sentence of § 7 was intended to not only restore governmental immunity to non-sovereign governmental agencies, but to provide uniform treatment for state and local agencies. Furthermore, the affirmance of common-law sovereign immunity in the second sentence of § 7 was a clear directive that this Court henceforth could not... judicially abrogate the state’s sovereign immunity. ...
Therefore, at the time § 7 was enacted, the state was immune from tort liability when it was engaged in the exercise or discharge of a governmental function, unless a statutory exception was applicable. This same immunity is reiterated by the first and second sentences of § 7.
In summary, at the time § 7 was enacted and became effective, the state enjoyed immunity from tort liability at common law whenever it was engaged in the exercise or discharge of a governmental function, unless a statutory exception was applicable. This common-law sovereign immunity was codified by the second sentence of § 7. The immunity granted to the state by the first sentence of § 7 is essentially coextensive with this common-law immunity. We note that this interpretation furthers the Legislature’s intent to create uniform standards of liability for state and non-sovereign governmental agencies. [Id. at 605-606, 608.]
Ross clearly indicates that exceptions to sovereign immunity must be granted by the Legislature. Again, the Legislature has not provided such an exception for trespass-nuisance claims.
In their cross-appeal, plaintiffs claim that the trial court should not have granted defendants summary disposition with regard to the inverse-condemnation claim. In reviewing a motion for summary disposition under MCR 2.116(0(10), this Court considers the pleadings, depositions, admissions, and other documentary evidence in the light most favorable to the nonmovant. Morris & Doherty, PC v Lockwood,
“ ‘Eminent domain’ or ‘condemnation’ is the power of a government to take private property.” Silver Creek Drain Dist v Extrusions Div, Inc,
“An inverse or reverse condemnation suit is one instituted by a landowner whose property has been taken for public use without the commencement of condemnation proceedings.”
[a]ny injury to the property of an individual which deprives the owner of the ordinary use of it is equivalent to a taking, and entitles him to compensation. So a partial destruction or diminution of value of property by an act of government, which directly and not merely incidentally affects it, is to that extent an appropriation. [Peterman v Dep’t of Natural Resources,446 Mich 177 , 190;521 NW2d 499 (1994) (citations and quotation marks omitted).]
In cases involving a “legalized nuisance,” e.g., “the persistent passing of trains on a railroad, or planes in the air, or vehicles on the road,” a plaintiff must allege that the property is directly affected in a manner that is unique or peculiar relative to the property of other similarly situated persons. Spiek v Dep’t of Transp,
In Spiek,
The Supreme Court opined that if “a legalized nuisance affects all in its vicinity in common, damages generally are not recoverable under just-compensation theoiy” because such common injuries are “incidental effects not amounting to an appropriation.” Id. at 345. The Court discussed the common-law doctrine of damnum absque injuria: “ ‘Loss, hurt, or harm without injury in the legal sense; that is, without such breach of duty as is redressible by a legal action. A loss or injury which does not give rise to an action for damages against the person causing it.’ ” Id. at 346, quoting Black’s Law Dictionary (6th ed).
The Spiek Court noted that if
the plaintiff alleges that the property is directly affected in a manner that is unique or peculiar in comparison to the property of other similarly situated persons, the plaintiff states a claim for which the relief sought may be granted under well-established principles for proving the right to compensation. [Spiek, 456 Mich at 346 .]
The Court specifically explained:
The right to just compensation, in the context of an inverse condemnation suit for diminution in value caused by the alleged harmful affects to property abutting a public highway, exists only where the landowner can allege a unique or special injury, that is, an injury that is different in kind, not simply in degree, from the harm suffered by all persons similarly situated. While the Michigan courts have not had the opportunity to address this issue directly in recent years, the overwhelming weight of foreign authority supports this conclusion, as do contemporary public policy considerations. [Id. at 348.]
The Court opined further:
In the context of traffic flow, a degree of harm threshold, as opposed to the well-established difference in kind threshold, would be unworkable both in a practical sense and from the standpoint of public policy because it would depend on the amount of traffic traveling a particular highway at a particular time that may change over time because of factors unrelated to and out of the control of the state. For example, demographic changes and economic changes affecting commercial and industrial development may determine the degree of harm, rather than the actual location of the highway in a particular place by the state. To require the state to litigate every case in which a person owning land abutting a public highway feels aggrieved by changing traffic conditions would wreak havoc on the state’s ability to provide and maintain public highways and place within the judicial realm that which is inappropriate for judicial remedy. Where harm is shared in common by many members of the public, the appropriate remedy lies with the legislative branch and the regulatory bodies created thereby, which participate extensively in the regulation of vibrations, pollution, noise, etc., associated with the operation of motor vehicles on public highways. Only where the harm is peculiar or unique in this context does the judicial remedy become appropriate. [Id. at 349.]
The Supreme Court concluded that the defendant was entitled to summary disposition because the plaintiffs had failed to overcome the doctrine of damnum absque injuria by failing to “alleg[e] harm of a character different from that suffered by all living in similar proximity to a highway.” Id. at 350. The Court found that the “plaintiffs’ complaint alleges the same type of incidental and consequential harm as is experienced by all persons similarly situated to plaintiffs in that they reside near a public highway.” Id. The Court further rejected the plaintiffs’ assertion “that recovery was available if the harm suffered merely differed in degree from the inconvenience experienced by the public at large.” Id. The Court ultimately held:
The just-compensation requirement in the Michigan Constitution does not require the state to compensate every property owner living in proximity to a public highway for the normal inconveniences associated therewith. The plaintiff states a claim for which relief may be granted only where the plaintiff alleges harm of a unique or peculiar kind.We reverse the decision of the Court of Appeals and reinstate the trial court’s order granting defendant’s motion for summary disposition. [Id. at 350-351.]
In this case, defendants used salt as a means to prevent ice from building up on public highways and roads. Notably, plaintiffs allege that the harm is caused not by the act of administering salt to the highways and roads, but as a result of traffic causing salt spray to ultimately invade plaintiffs’ property, thereby harming their blueberry crops. Ottawa County formed the Ottawa County Road Salt Commission to identify strategies to modify Ottawa County’s winter road maintenance to prevent further environmental impacts related to the application of road salt. A survey was conducted, which estimated losses to blueberry production for 2003. The survey looked at 16 property owners with 32 farms. Fifteen farms did not provide any information regarding losses. The other 17 farms listed losses ranging from $3,000 to $200,000. Seven farms listed losses of less than $10,000; seven farms listed losses between $10,000 and $50,000; one farm listed losses of $80,000; one farm listed losses of $120,000; and one farm listed losses of $200,000. The road salt commission noted that the environmental impact from road salt received attention after blueberry growers reported damage to blueberry bushes near roadways. The road salt commission also acknowledged:
The threat of increasing road salt usage to the blueberry industry is not the only cause for concern. If current winter road maintenance practices are not changed, the damage observed to roadside trees and ornamental plants could become more widespread. Other impacts could also become more pronounced. Elevated levels of chloride, for example, have been detected in irrigation ponds adjacent to roadways. Rising chloride levels have also been found in groundwater in Illinois, as well as in the Great Lakes. While the chloride levels detected in groundwater and in the Great Lakes are not yet believed to be harmful to humans, some research indicates that these levels have already altered our ecosystems. For instance, researchers have identified the increased salinity in the Great Lakes as a factor in the migration of some exotic species to this region.
The road salt commission’s report, Recommendations for Salt Management, generally focused on the environmental impact on blueberry crops. Nevertheless, as noted in the report’s facts and findings regarding impacts of road salt usage:
Other environmental impacts, including damage to other types of roadside vegetation and water resources, are occurring or suspected of occurring as a result of road salt usage. The effect of road salt exposure on trees is explained in an article which appeared in Michigan Landscape Magazine (See Attachment K). The impact on water resources is documented in Table 1 and Figures 1-2.
The road salt commission also provided measures designed to eliminate the damaging effects of road salt exposure to blueberries by establishing windbreaks using salt resistant tree species, placing the first row of blueberry plantings at least 300 feet from the road, digging irrigation ponds at the back of the field away from roads, and improving drainage around fields.
Certainly, plaintiffs have suffered some kind of loss as a result of the application of the road salt; however, their claims are precluded under the common-law doctrine of damnum absque injuria. See Spiek,
Plaintiffs maintain that their injury is different from other similarly situated property owners. Plaintiffs emphasize the loss of their cash crop as compared to other property owners’ lawns, ornamental plantings, or incidental roadside vegetation. However, plaintiffs’ injury clearly is merely of a different degree than that suffered by the public at large and therefore is not actionable. Spiek,
Affirmed in part, reversed in part, and remanded for entry of judgment in favor of DOT. We do not retain jurisdiction.
Notes
The trial court first granted summary disposition to Ottawa County in a separate proceeding and then later applied the same rationale in granting summary disposition to DOT.
Plaintiffs contend that their trespass-nuisance claim rises to the level of an unconstitutional-taking claim and therefore cannot be barred by sovereign immunity. We need not decide whether such a taking claim would be exempt from sovereign immunity because, as noted later in this opinion, plaintiffs have failed to set forth the necessary allegations to constitute an unconstitutional-taking claim.
Concurrence Opinion
(concurring). I concur in the result reached by the majority in this matter, but write separately to elaborate on the majority’s analysis and why we are compelled to dismiss plaintiffs’ claims.
In reaching its conclusion that there is no trespass-nuisance exception to the doctrine of sovereign immunity, the majority relies in part on Ross v Consumers Power Co (On Rehearing),
Except as otherwise provided in this act, a governmental agency is immune from tort liability if the governmental agency is engaged in the exercise or discharge of a governmental function. Except as otherwise provided in this act, this act does not modify or restrict the immunity of the state from tort liability as it existed before July 1, 1965, which immunity is affirmed.
The Pohutski Court cited Ross, a pre-Hadfield,
I agree with the majority’s outcome primarily, however, because an historical analysis of sovereign immunity before July 1, 1965, reveals no indication that a common-law exception existed with respect to trespass-nuisance claims against the state. As noted by the majority, plaintiffs cite only Hadfield,
Additionally, I note that footnote 2 of the majority opinion briefly addresses plaintiffs’ argument that their trespass-nuisance claim rises to the level of an unconstitutional-taking claim and is, therefore, exempt from sovereign immunity. The footnote states: “We need not decide whether such a taking claim would be exempt from sovereign immunity because, as noted later in this opinion, plaintiffs have failed to set forth the necessary allegations to constitute an unconstitutional-taking claim.” While I agree with this statement, it is worth noting that while trespass-nuisance and unconstitutional-taking claims are similar, they remain distinct actions.
In Hinojosa v Dep’t of Natural Resources,
The liability imposed on the state [in Buckeye] was for the tort of nuisance, not to justly compensate an owner for the taking of private property for public use. Nevertheless, the Buckeye Court relied on the Taking Clause as its rationale for concluding that common-law sovereign immunity did not shield the state from liability for nuisance. [Hinojosa,263 Mich App at 543 .]
This Court also noted:
Regarding Buckeye, the Hadfield Court observed that, “although the plaintiff had alleged nuisance and this Court found nuisance, the holding was premised on the fact that an unconstitutional taking had occurred,” and that the Buckeye Court treated the two causes of action as synonymous. .. . But the Court also noted that “[d]irect reliance on [the Taking Clause] should not be confused with the assertion of the trespass-nuisance exception ... [because] other trespass-nuisance cases that cited the taking provision of the constitution merely employed that provision as a rationale for the judicially created rule that would impose liability in a tort settinginvolving governmental immunity.” ... Our Supreme Court later would again emphasize that a constitutional taking and the tort of trespass-nuisance are distinct actions. [Id. at 545-546, quoting Hadfield, 430 Mich at 165 n 10, 168.]
This Court underscored that although judicial decisions have closely associated trespass-nuisance with the Taking Clause, the former action remains a tort. Hinojosa,
The Hinojosa Court concluded:
In the case at bar, the trial court correctly dismissed plaintiffs’ tort claim of trespass-nuisance because our Supreme Court in Pohutski overruled Hadfield, finding that “the plain language of the governmental tort liability act does not contain a trespass-nuisance exception to governmental immunity.” Pohutski, supra at 689-690. But the majority in Pohutski pointedly declined to address whether facts that previously might have supported liability for a trespass-nuisance could establish an unconstitutional taking. The Pohutski Court stated:
“The parties have addressed whether trespass nuisance is not a tort within the meaning of the governmental immunity statute, but rather an unconstitutional taking of property that violates Const 1963, art 10, § 2. The trial courts in these cases have yet to address the taking claims. Therefore, we decline to discuss those claims at this time.” [Id. at 699.]
Thus, although presented the opportunity, our Supreme Court declined to adopt Justice Kelly’s views that Buckeye “acknowledged that the trespass-nuisance exception has a constitutional basis,” and that “governmental immunity is not a defense to a constitutional tort claim, hence not to a claim based on trespass-nuisance.” Pohutski, supra at 709 (KELLY, J., dissenting), citing Thom v State Hwy Comm’r,376 Mich 608 , 628;138 NW2d 322 (1965). We conclude, therefore, that the issue whether trespass-nuisance as alleged here may constitute a constitutional taking was not decided in Buckeye. Hence, we must consider other decisions addressing the application of the Taking Clause. [Hinojosa,263 Mich App at 547-548 .]
The Hinojosa Court held that the plaintiffs failed to state a cause of action for a “ ‘taking’ ” or “ ‘inverse condemnation.’ ” Id. at 548.
In sum, courts of this state have held that trespass-nuisance and unconstitutional taking are distinct actions. Our Supreme Court has not yet addressed whether facts that might establish liability for trespass-nuisance could establish an unconstitutional-taking claim. See id. at 547. It is clear, however, that while our Legislature has the constitutional authority to modify or abolish the ability to bring trespass-nuisance claims against the state, an unconstitutional-taking action may not be limited except as provided by the Michigan Constitution. [Id. at 546.] Thus, if plaintiffs alleged a taking, they may have a cause of action. As stated by the majority, however, we need not address that issue because plaintiffs failed to set forth the allegations necessary to establish an unconstitutional taking.
Finally, in regard to plaintiffs’ inverse-condemnation claim, I agree with the majority’s conclusion that the difference between the injuries suffered by plaintiffs
The majority compares this case to Spiek v Dep’t of Transp,
“an essential change in the neighborhood [that]... violated restrictive covenants in the subdivision... [and] caused grave and serious damage to the value of the .. . property by increasing dramatically the levels of noise, vibrations, pollution and dirt in the once-residential area... [thus] destroying the desirability of the ... property as an area for living and . .. destroying the acceptability of the property for residential purposes.” [Id. at 334.]
As noted in the majority opinion for this case, the Spiek Court held that damages are not recoverable for a “legalized nuisance” such as “the persistent passing of trains on a railroad, or planes in the air, or vehicles on the road” unless “the plaintiff alleges that the property is directly affected in a manner that is unique or peculiar in comparison to the property of other similarly situated persons . ...” Id. at 345-346. The plaintiff must allege an injury “different in kind, not simply in degree, from the harm suffered by all persons similarly situated.” Id. at 348. Significantly, the Spiek Court further stated:
In the context of traffic flow, a degree of harm threshold, as opposed to the well-established difference in kind threshold, would be unworkable both in a practical sense and from the standpoint of public policy because it would depend on the amount of traffic traveling a particular highway at a particular time that may change over time because of factors unrelated to and out of the control of the state. For example, demographic changes and economic changes affecting commercial and industrial development may determine the degree of harm, rather than the actual location of the highway in a particular place by the state. To require the state to litigate every case in which a person owning land abutting a public highway feels aggrieved by changing traffic conditions would wreak havoc on the state’s ability to provide and maintain public highways and place within the judicial realm that which is inappropriate for judicial remedy. Where harm is shared in common by many members of the public, the appropriate remedy lies with the legislative branch and the regulatory bodies created thereby, which participate extensively in the regulation of vibrations, pollution, noise, etc., associated with the operation of motor vehicles on public highways. Only where the harm is peculiar or unique in this context does the judicial remedy become appropriate. [Id. at 349.]
The Spiek Court reversed the decision of the Court of Appeals and reinstated the Court of Claims order granting summary disposition to the defendant, concluding that the plaintiffs had failed to state a claim upon which relief could be granted because they did not allege harm to their property that differed “in kind from the harm suffered by all living in proximity to a public highway in Michigan.” Id. at 350. Rather, the plaintiffs’ complaint alleged “the same type of incidental and consequential harm as is experienced
In this case, plaintiffs allege that the spreading of salt on public highways and primary county roads adjacent to their blueberry fields ultimately results in reduced blueberry production. According to plaintiffs, after the salt is spread, passing vehicles and the wind throw salt water onto their fields, causing damage to blueberry bushes and reduced production from those bushes. The spreading of salt on the roads may be categorized as a “legalized nuisance” comparable to locating a highway service drive near residential property, resulting in increased levels of noise, vibration, pollution, and dirt from traffic flow. See id. at 345. Therefore, like the plaintiffs in Spiek, plaintiffs in this case must allege an injury “different in kind, not simply in degree, from the harm suffered by all persons similarly situated.” Id. at 348. Plaintiffs’ injury must be unique or peculiar. See id. at 346.
As our Supreme Court articulated in Spiek, it would be unworkable to apply a degree-of-harm threshold, rather than a difference-in-kind threshold, in the context of traffic flow. Id. at 349. It would also be unworkable under the facts of this case. The road commissions responsible for spreading salt do so to prevent the formation of ice on public highways and primary county roads during the winter months. The amount of salt spread on the roads directly correlates to the severity of the weather. According to plaintiffs, once the salt is spread, salt water is thrown onto their fields by passing vehicles and the wind. Thus, the degree of harm suffered by plaintiffs is largely dependent on the weather over the course of the winter, which is out of defendants’ control, and traffic flow, which may also be affected by factors out of defendants’ control. Requiring the state and county road commissions to litigate every case in which vegetation is damaged by salt spray would seriously impede their ability to protect Michigan’s citizens from the hazards presented by ice-covered roads. I agree with the Spiek Court that under facts such as these, a legislative remedy is more appropriate than a judicial remedy. The legislative branch is the appropriate branch to weigh the safety hazards presented by ice-covered roads against the environmental and economic impact of salt usage and, if deemed necessary, order that the spreading of salt be reduced or replaced with an alternative method of deicing the roads.
Plaintiffs claim that the harm they suffer is of a different kind than the harm suffered by those similarly situated. Plaintiffs liken their situation to that experienced by the respondents in United States v Causby,
Because the harm suffered by plaintiffs differs only in degree, and not in kind, from the harm suffered by those similarly situated, I agree with the majority that plaintiffs’ inverse-condemnation claim must fail.
Hadfield v Oakland Co Drain Comm’r,
In Buckeye,
“This private nuisance was nonetheless one merely because the city had acquired the lot through foreclosure for nonpayment of taxes. Public policy in a civilized community requires that there be someone to be held responsible for a private nuisance on each piece of real estate, and, particularly in an urban area, that there be no oases of nonliability where a private nuisance may be maintained with impunity.” [Id. at 643-644, quoting Kurtigian v City of Worcester, 348 Mass 284, 291;203 NE2d 692 (1965).]
Our Supreme Court held that “[t]here is no sovereign immunity applicable to a situation of nuisance as we have in this case.” Buckeye,
“[N]avigable airspace” was then defined as “ ‘airspace above the minimum safe altitudes of flight prescribed by the Civil Aeronautics Authority.’ ” Causby,
