(b) Notwithstanding any other provision of law relating to valuation, for assessments for the 1998–99 fiscal year, and each fiscal year thereafter, (1) regular assessments of all taxable real property interests of the operator of certificated aircraft at a publicly owned airport, other than the excluded possessory interests, and (2) timely escape assessments upon the real property interests governed by this section issued on or after April 1, 1998, pursuant to Sections 531 and 531.2, shall be presumed to be valued and assessed at full cash value for these interests only if the assessor uses the following direct income approach in capitalizing net economic rent:

1. (1) The economic rent shall be computed by using one-half of the landing fee rate used to calculate the 1996–97 assessment for real property interests, other than excluded possessory interests, multiplied by the aggregate weight of landings by the operator for the airport’s fiscal year prior to the 1996 lien date. The one-half of the landing fee rate used to compute the 1996–97 economic rent shall be annually adjusted in accordance with the percentage change, rounded to the nearest one-thousandth of 1 percent, from October of the prior fiscal year to October of the current fiscal year in the California Consumer Price Index for all items, as determined by the California Department of Industrial Relations, except that in no instance shall this adjusted rate exceed one-half of the airport’s actual landing fee rate for the last full fiscal year. The economic rent shall also be adjusted in proportion to the increase or decrease in the aggregate weight of landings by the operator for the last full fiscal year at each airport in the taxing county. In the case of a new operator, the economic rent shall be determined by reference to a similarly situated operator.
2. (2) The expense ratio shall be the ratio used by each county for the 1996 lien date.
3. (3) The capitalization rates shall not exceed, or be less than, the rates used by each county for the 1996 lien date, except that they shall be annually adjusted in proportion to the changes in the “Going-in Cap Rate; All Types” as published by the Real Estate Research Corporation, and, as so adjusted, shall be rounded to the nearest one-half percent. If this information ceases to be published by the Real Estate Research Corporation or the format significantly changes, a publication or adjustment agreed to by the airlines and the taxing counties shall be substituted.

4. (4) The term of possession for each operator shall be the term used by each county to calculate the 1996–97 assessment, but shall not exceed a maximum term of 20 years. Subject to paragraphs (1) to (3), inclusive, of subdivision (b) of Section 61 as applied to interests subject to this subdivision, changes of ownership and term of possessions shall be determined as follows:

   1. (A) In the case of the creation, renewal, extension or assignment of an operating agreement or permit, without the concurrent creation, renewal, extension or assignment of a terminal, hangar, or cargo facility agreement, no change in ownership will be presumed to have occurred and the term of possession shall be the term used by each county for their 1996–97 assessments, not to exceed a maximum of 20 years.
   2. (B) In the case of the creation, renewal, extension or assignment of a terminal, hangar, or cargo facility agreement, a change in ownership will be presumed to have occurred and the term of possession shall be the actual term stated in the written terminal, hangar, or cargo facility agreement, provided that the term shall not be less than 10 years or exceed 15 years.
   3. (C) In the case of any operator without a terminal, hangar, or cargo facility agreement, the actual creation, renewal, extension or assignment of a written operating agreement or permit shall constitute a change in ownership and the actual term of the operating agreement for that carrier will be used, provided that the term shall not be less than 5 years or exceed more than 15 years.
5. (5) Nothing in this subdivision is intended to apply to the determination of a term of possession for a possessory interest in an excluded possessory interest.

(c) Notwithstanding subdivision (b), in a county in which 1995–96 landing fees were not used to calculate the 1996–97 assessment, the county shall benefit from the presumption of correctness set forth in subdivision (b) only if the assessor uses the following direct income approach in capitalizing net economic rent:

1. (1) The calculations required in subdivision (b) are performed using the assessment that would have been derived in the 1996–97 fiscal year had the assessor followed the methodology set forth in subdivision (b) using actual airport data for the 1995–96 fiscal year.
2. (2) If any portion of the airport’s landing fee rate for the 1995–96 fiscal year was in dispute and resulted in the creation of an escrow account for a portion of the landing fees paid, that portion of the landing fee rate attributable to the escrowed funds shall not be included in the calculations performed in paragraph (1). However, if the dispute is resolved, in whole or in part, in favor of the publicly owned airport and all or a portion of the escrowed funds are released to the airport, the assessor shall, without regard to any other statutorily imposed time limitation, be entitled to recalculate the assessments required by this subdivision using an adjusted landing fee rate that reflects a final decision on the disposition of escrowed funds to produce escape assessments for all affected years.

(d) Value shall be determined as follows:

1. (1) Economic rent shall be calculated by applying the expense ratio described in paragraph (2) of subdivision (b) to reduce gross income determined pursuant to paragraph (1) of subdivision (b) or (c) and paragraph (2) of subdivision (c) to arrive at an amount that shall be deemed to be equivalent to economic rent.
2. (2) Economic rent, as so determined, shall be capitalized for the term provided for in paragraph (4) of subdivision (b) at the capitalization rate determined in accordance with paragraph (3) of subdivision (b).