[Federal Register Volume 62, Number 77 (Tuesday, April 22, 1997)] [Rules and Regulations] [Page 19483] From the Federal Register Online via the Government Publishing Office [www.gpo.gov] [FR Doc No: 97-10317] ----------------------------------------------------------------------- DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. 96-NM-146-AD; Amendment 39-9953; AD 97-05-09] RIN 2120-AA64 Airworthiness Directives; Boeing Model 737 Series Airplanes AGENCY: Federal Aviation Administration, DOT. ACTION: Final rule; correction. ----------------------------------------------------------------------- SUMMARY: This document corrects a typographical error that appeared in airworthiness directive (AD) 97-05-09 that was published in the Federal Register on March 5, 1997 (62 FR 9925). The typographical error resulted in the omission of a serial number of a power control unit (PCU) from NOTE 2 of the AD. This AD is applicable to certain Boeing Model 737 series airplanes and requires replacement of the flow restrictors of the aileron and elevator PCU's with new flow restrictors. DATES: Effective April 9, 1997. The incorporation by reference of certain publications listed in the regulations was previously approved by the Director of the Federal Register as of April 9, 1997 (62 FR 9925, March 5, 1997). FOR FURTHER INFORMATION CONTACT: Don Kurle, Senior Engineer, Systems and Equipment Branch, ANM-130S, FAA, Transport Airplane Directorate, Seattle Aircraft Certification Office, 1601 Lind Avenue, SW., Renton, Washington 98055-4056; telephone (206) 227-2798; fax (206) 227-1181. SUPPLEMENTARY INFORMATION: Airworthiness Directive (AD) 97-05-09, amendment 39-9953, applicable to certain Boeing Model 737 series airplanes, was published in the Federal Register on March 5, 1997 (62 FR 9925). That AD requires replacement of the flow restrictors of the aileron and elevator power control units (PCU) with new flow restrictors. As published, that AD contained a typographical error in NOTE 2, which identifies PCU serial numbers that correspond to part number 65- 44761-21. The FAA inadvertently omitted serial number ``8549A'' from NOTE 2 of the final rule. [This serial number was included in NOTE 2 of the notice of proposed rulemaking (NPRM).] Since no other part of the regulatory information has been changed, the final rule is not being republished. The effective date of the AD remains April 9, 1997. Sec. 39.13 [Corrected] On page 9928, in the first column, NOTE 2 of AD 97-05-09 is corrected to read as follows: * * * * * Note 2: PCU's having P/N 65-45180-29 consist of a PCU assembly having P/N 65-44761-21 plus associated hydraulic fittings. Both PCU P/N's 65-45180-29 and 65-44761-21 are serialized. PCU's subject to the requirements of this AD may be more easily identified using serial numbers for P/N 65-44761-21. The following serial numbers correspond to P/N 65-44761-21: 8549A, 8550A, 8552A, 8556A, 8557A, 8561A, 8563A through 8718A inclusive, 8720A through 8726A inclusive, 8728A through 8745A inclusive, 8749A, 8750A through 8758A inclusive, 8760A through 8873A inclusive, 8876A through 9004A inclusive, 9007A through 9012A inclusive, 9014A through 9040A inclusive, 9042A through 9066A inclusive, 9068A through 9340A inclusive, 9342A through 9388A inclusive, 9390A through 9529A inclusive, 9531A through 9676A inclusive, and 9678A through 9688A inclusive. * * * * * Issued in Renton, Washington, on April 16, 1997. Darrell M. Pederson, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 97-10317 Filed 4-21-97; 8:45 am] BILLING CODE 4910-13-U