Airworthiness Directives; Boeing Model 737 Series Airplanes

[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]


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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.

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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

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