Opinion for the court filed by Circuit Judge SENTELLE.
Howard Fried challenges the procedures used by the Federal Aviation Administration (FAA) in deciding not to renew Fried’s authority to examine pilots. Although Fried alleges a flurry of constitutional, statutory, and regulatory violations, none permit or persuade us to disturb the agency’s result.
I. BACKGROUND
The Federal Aviation Act provides that the FAA administrator “may delegate to a qualified private person ... the examination, testing, and inspection necessary” to issue a pilot certificate, and may “rescind [this] delegation ... at any time for any reason.” 49 U.S.C. § 44702(d). Among the various delegations that the FAA makes under this provision is the designation of pilot examiners, who are to conduct flight testing of those wishing to become pilots. See 14 C.F.R. § 183.23 (1995). A designated pilot examiner (DPE), like all Flight Standards Designated Representatives, see id. at § 183.13(b), enjoys a one-year term that “may be renewed for additional periods of one year in the Administrator’s discretion.” Id. at § 183.15(b).
The FAA first certified Howard Fried to be a designated pilot examiner in the mid-1960s. After many years as an examiner, he began writing a magazine column, which drew from his experience as a DPE. Despite occasional inquiries into Fried’s conduct as a DPE, the FAA annually renewed his DPE authority until 1993. On May 13,1993, Fried again sought renewal as a DPE. On May 24, 1993, David Hobgood, of the FAA’s local office, notified Fried that he would not be renewed because he had not conducted two pilot exams properly. Fried’s DPE authority expired by its terms on May 31,1993.
Fried protested his non-renewal because the local office neither notified him of its concerns with his performance as a DPE nor provided an opportunity to respond to those concerns. Standard FAA procedure allows a DPE to respond before the local office decides not to renew the examiner. See FAA Order 8700.1 CHG 10 ¶ 21 (1994). The DPE may then appeal the local decision to the regional FAA office and may further appeal the regional decision to a U.S. Court of Appeals. See id.
In this case, the manager of the regional office, David Hanley, agreed that Fried deserved a chance to respond to the FAA’s concerns before the FAA decided whether to renew Fried. Hanley thus announced that he would view the local office’s decision not to renew Fried as a “proposal” that Fried’s DPE status would not be renewed. To this *690 proposal, Hanley added three other grounds for not renewing Fried. He also notified Fried that he could respond to all five FAA concerns in an on-the-record hearing before Hanley on October 4,1993. If Fried was not satisfied with Hanley’s decision after that hearing, Fried could appeal to the national Flight Standards Service Director, Thomas Accardi.
Nine months after this hearing, Hanley decided that he would not renew Fried’s DPE authority. Fried appealed to Accardi, who affirmed Hanley. Fried then appealed to this court, alleging that the FAA had not adhered to the procedures mandated by the FAA’s own regulations, the Administrative Procedure Act, or the Constitution.
II. DISCUSSION
Unlike the Ninth Circuit,
see Greenwood v. FAA,
A Did the FAA violate the procedure its own rules prescribe?
We turn first to the contention that the FAA disregarded several of its internal procedures in deciding not to renew Fried. Fried argues that the FAA violated its rules by not affording him an opportunity for a hearing in his local FAA office, by permitting the regional office to both levy additional charges against Fried and to decide whether Fried should be renewed, by allowing these additional charges to be filed at all, and by failing to send him documents related to these charges. According to Fried, current FAA guidelines (and various sections of the Administrative Procedure Act, see, e.g., 5 U.S.C. § 554(d)) prohibit this conduct. He also claims that the modifications adopted by the FAA regional office for his renewal process directly violate the Administrative Procedure Act because the changes were not previously described in the Federal Register. See 5 U.S.C. § 552(a)(1)(C). Fried contends that any of these violations alone should result in remand.
As a prelude to any review of the process employed by the FAA, we caution that we do not intend to determine a threshold issue not squarely argued in this case. Although courts have generally required an agency to follow its own regulations,
see Webster v. Doe,
Assuming, without deciding, that we are able to review the violations of FAA procedures that Fried alleges, we conclude that Fried has not demonstrated a violation. Only two of Fried’s various claims merit separate comment. First, Fried has not demonstrated that the modified procedure adapted by the FAA in this case resulted in substantial — or any — prejudice.
See American Farm Lines v. Black Ball Freight Ser
*691
vice,
Second, Fried has not demonstrated why the FAA regional director could not base his ultimate decision not to renew Fried on charges that were not raised by the local office, but rather added by the regional director prior to Fried’s on-the-record hearing. Nothing in the rules precludes the regional director from basing his determination on reasons not described in the original proposal for non-renewal, especially in a situation, such as this, in which remand to the local office would be inappropriate. See FAA Order 8700.1 CHG 10 ¶ 21E (requiring only that the decision-maker indicate the reasons for non-renewal in writing). In addition, as the regional director was acting in the stead of the local office in this case, it was more than reasonable for the director to note additional concerns of the FAA when he informed Fried of the date of his hearing. Cf. FAA Order 8710.3B ¶ 7B-C (1994) (suggesting that the FAA notify a' DPE of the reasons for a proposed non-renewal in the same writing that the FAA informs the DPE of his option to respond to those concerns).
Fried’s other claims that the FAA violated its own regulations also have no merit. Therefore, assuming we may examine whether the FAA followed its own regulations in this case, we find that no such violation occurred.
B. Did, the FAA violate Fried’s constitutional right to procedural due process?
Whether or not we may review the substance of an FAA decision not to renew a DPE,
see Greenwood,
Such review, however, does not benefit Fried. Fried claims that the FAA violated his constitutional right to due process guaranteed by the Fifth Amendment (“No person shall be ... deprived of life, liberty, or property, without due process of law____”). Before a court may conclude that a government actor has violated an individual’s right to due process, it must conclude that some process was due. By its terms, the Due Process Clause does not apply unless an individual can show that the government action at issue deprives him of an aetu
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al interest in life, liberty, or property.
See Morrissey v. Brewer,
Fried had no cognizable property interest in the renewal of his DPE authority because he had no legal entitlement to renewal.
See Board of Regents v. Roth,
Similarly, Fried had no legitimate liberty interest in being renewed. Not only has the FAA not made his non-renewal, and any reasons for that non-renewal, public, but non-renewal neither automatically bars Fried from a broad range of government jobs nor stigmatizes him in a way that would substantially preclude the professional use of his skills.
See, e.g., Kartseva v. Department of State,
Without the loss of some legitimate protected interest, Fried cannot sustain any claim that the FAA violated his constitutional right to process, including any claim predicated on the FAA violations of its own regulations or on the disappearance of documents from Fried’s FAA file. Because Fried has not established a protected interest, we need not examine whether the FAA administered the proper dosage of procedure.
C. Should Fried have maintained his DPE authority throughout his appeal?
We also need not, and thus will not, determine whether the FAA violated the Administrative Procedure Act by not continuing Fried’s authority to examine pilots until the resolution of his appeal. Fried had argued that his DPE authority was a license within the meaning of the APA,
see
5 U.S.C. § 551(8), and thus the FAA should have extended his authority to examine pilots “until the application [for renewal] ha[d] been finally determined by the agency.” 5 U.S.C. § 558(c). However, Fried’s counsel admitted — and we agree — that this issue is moot unless we see some reason to remand Fried’s complaints to the FAA for further determinations by that agency.
Cf. Marilyn T., Inc. v. Evans,
III. CONCLUSION
We again stress that we have not decided whether we will review a decision by the FAA whether to renew a phot examiner. Precedent and prudence limits comment on questions not essential to a decision,
see, e.g., Chandler v. Judicial Council of the Tenth Cir.,
It is so ordered.
