AD 98-19-15 R1

Events Leading to the Issuance of This AD A proposal to amend part 39 of the Federal Aviation Regulations (14 CFR part 39) to include an AD that would apply to Fairchild SA226 and SA227 series airplanes equipped with Barber-Colman pitch trim actuators, part number (P/N) 27-19008-001/-004 or P/N 27-19008-002/-005 was published in the Federal Register as a notice of proposed rulemaking (NPRM) on September 23, 1999 (64 FR 51479). The NPRM proposed to revise AD 98-19-15 . AD 98-19-15 Amendment 39-10794 (63 FR 50983, September 24, 1998), currently requires incorporating the following information into the applicable AFM on Fairchild SA226 and SA227 airplanes that are equipped with Barber-Colman pitch trim actuators, P/N 27-19008-001/-004 or P/N 27-19008-002/-005:

"Limit the maximum indicated airspeed to maneuvering airspeed (Va) as shown in the appropriate airplane flight manual (AFM)."

and

"The minimum crew required is two pilots."

The following service information describes the AFM requirements:

- Fairchild Service Letter 226-SL-017, FAA Approved: August 26, 1998; Revised: September 2, 1998;

- Fairchild Service Letter 227-SL-033, FAA Approved: August 26, 1998; Revised: September 2, 1998; and

- Fairchild Service Letter CC7-SL-023, FAA Approved: August 26, 1998; Revised: September 2, 1998.

The NPRM proposed to retain the requirements of the existing AD, and would provide the option of incorporating one of the design alternatives developed since the issuance of AD 98-19-15. These design alternatives are:

- Barber-Colman P/N 27-19008-006 or P/N 27-19008-007 pitch trim actuators. Procedures to install these pitch trim actuators are contained in Fairchild Service Bulletin 226-27-064 , Fairchild Service Bulletin 227-27-046, and Fairchild Service Bulletin CC7-27-015. All airplane models are eligible for this installation and airplane models vary by service bulletin;

- Simmonds-Precision P/N DL5040M5 or P/N DL5040M6 pitch trim actuators. All airplane models are eligible for this installation. Procedures and limitations to install these pitch trim actuators for the Models SA227-CC and SA227-DC airplanes are contained in Fairchild Service Bulletin CC7-27-014, and are contained in engineering data for all other models (contact Fairchild); and

- Simmonds-Precision P/N DL5040M8 pitch trim actuators. Procedures and limitations to install these pitch trim actuators are contained in Fairchild Service Bulletin 227-27-045, Fairchild Service Bulletin 226-27-063, and Fairchild Service Bulletin CC7-27-013. All airplane models are eligible for this installation and airplane models vary by service bulletin.

These pitch trim actuators, when installed, would eliminate the need for the requirements of AD 98-19-15. Interested persons have been afforded an opportunity to participate in the making of this amendment. One comment was received in favor of the NPRM and no comments were received on the FAA's determination of the cost to the public.

The FAA's Determination After careful review of all available information related to the subject presented above, the FAA has determined that air safety and the public interest require the adoption of the rule as proposed except for minor editorial corrections. The FAA has determined that these minor corrections will not change the meaning of the AD and will not add any additional burden upon the public than was already proposed.

Cost Impact The FAA estimates that 508 airplanes in the U.S. registry could have the affected pitch trim actuators installed and, therefore, could be affected by the AFM requirements of this AD. Since an owner/operator who holds at least a private pilot s certificate as authorized by sections 43.7 and 43.9 of the Federal Aviation Regulations (14 CFR 43.7 and 43.9) may accomplish the AFM insertions, the only cost impact upon the public will be the approximately 30 minutes it will take each owner/operator to incorporate the information into the AFM.

The FAA has no way of determining the number of airplanes that have the design alternative pitch trim actuators installed, and will therefore not be affected by this AD.

Regulatory Impact These regulations will not have a substantial direct effect on the States, on the relationship between the national Government and the States, or on the distribution of power and responsibilities among the various levels of government. Therefore, the FAA has determined that this final rule does not have federalism implications under Executive Order 13132.

For the reasons discussed above, I certify that this action (1) is not a "significant regulatory action" under Executive Order 12866; (2) is not a "significant rule" under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and (3) will not have a significant economic impact, positive or negative, on a substantial number of small entities under the criteria of theRegulatory Flexibility Act. A copy of the final evaluation prepared for this action is contained in the Rules Docket. A copy of it may be obtained by contacting the Rules Docket at the location provided under the caption "ADDRESSES".

List of Subjects in 14 CFR Part 39 Air transportation, Aircraft, Aviation safety, Safety.

Adoption of the Amendment Accordingly, pursuant to the authority delegated to me by the Administrator, the Federal Aviation Administration amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows: PART 39 - AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. 39.13 [Amended] 2. Section 39.13 is amended by removing Airworthiness Directive (AD) 98-19-15, Amendment 39-10794, and adding a new AD to read as follows:

Adoption of the Amendment Accordingly, pursuant to the authority delegated to me by the Administrator, the Federal Aviation Administration amends part 39 of the Federal Aviation Regulations (14 CFR part 39) as follows: PART 39 - AIRWORTHINESS DIRECTIVES 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. 39.13 [Amended] 2. Section 39.13 is amended by removing Airworthiness Directive (AD) 98-19-15, Amendment 39-10794, and adding a new AD to read as follows: