Airworthiness directives › 97-09-14
AD 97-09-14 Airworthiness Directives; Boeing Model 737-100, -200, -300, -400, and -500 Series Airplanes
Models named: 737-100, -200, -300, -400, -500 series. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
Model 737-100, -200, -300, -400, and -500 series airplanes equipped with a rudder power control unit (PCU) having part number (P/N) 65-44861-( ) and a serial number less than 1252A; or an aileron or elevator PCU having P/N 65-44761-( ) (except those having P/N's that contain an ``ss'') and a serial number less than 5360A; certificated in any category. Note 1: This AD applies to each airplane identified in the preceding applicability provision, regardless of whether it has been otherwise modified, altered, or repaired in the area subject to the requirements of this AD. For airplanes that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must request approval for an alternative method of compliance in [[Page 24013]] accordance with paragraph (d) of this AD. The request should include an assessment of the effect of the modification, alteration, or repair on the unsafe condition addressed by this AD; and, if the unsafe condition has not been eliminated, the request should include specific proposed actions to address it.
Compliance
Required as indicated, unless accomplished previously. To prevent a reduced rate of movement of the elevator, aileron, or rudder, which, if not corrected, could result in reduced controllability of the airplane, accomplish the following: (a) Perform an inspection of reworked or overhauled aileron and elevator PCU's having P/N 65-44761-( ) (except those having P/N's that contain an ``ss'') and a serial number less than 5360A; and rudder PCU's having part number (P/N) 65-44861-( ) and a serial number less than 1252A; to determine if reworked PCU manifold cylinder bores containing chrome plating are installed, in accordance with Boeing Service Letter 737-SL-27-30, dated April 1, 1985. Accomplish the inspection at the earlier of the times specified in paragraphs (a)(1) and (a)(2) of this AD. (1) Within 5 years or 15,000 flight hours after the effective date of this AD, whichever occurs first. (2) At the next time the PCU is sent to a repair facility. (b) If any reworked PCU manifold cylinder bores containing chrome plating are installed: Prior to further flight, replace the cylinder bores with bores that have been reworked using the oversize method or the steel sleeve method specified in Boeing Service Letter 737-SL-27-30, dated April 1, 1985. Accomplish the replacement in accordance with the service letter. (c) As of the effective date of this AD, no person shall install a reworked PCU manifold cylinder bore containing chrome plating on an aileron or elevator PCU having P/N 65-44761-( ), or on a rudder PCU having P/N 65-44861-( ), of any airplane unless the cylinder bore has been reworked using the oversize method or the steel sleeve method specified in Boeing Service Letter 737-SL-27-30, dated April 1, 1985. (d) An alternative method of compliance or adjustment of the compliance time that provides an acceptable level of safety may be used if approved by the Manager, Seattle Aircraft Certification Office (ACO), FAA, Transport Airplane Directorate. Operators shall submit their requests through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Seattle ACO. Note 2: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Seattle ACO. (e) Special flight permits may be issued in accordance with sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate the airplane to a location where the requirements of this AD can be accomplished. (f) The inspection and repair shall be done in accordance with Boeing Service Letter 737-SL-27-30, dated April 1, 1985. This incorporation by reference was approved by the Director of the Federal Register in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies may be obtained from Boeing Commercial Airplane Group, P.O. Box 3707, Seattle, Washington 98124-2207. Copies may be inspected at the FAA, Transport Airplane Directorate, 1601 Lind Avenue, SW., Renton, Washington; or at the Office of the Federal Register, 800 North Capitol Street, NW., suite 700, Washington, DC. (g) This amendment becomes effective on June 6, 1997. Issued in Renton, Washington, on April 24, 1997. Darrell M. Pederson, Acting Manager, Transport Airplane Directorate, Aircraft Certification Service. [FR Doc. 97-11200 Filed 5-1-97; 8:45 am] BILLING CODE 4910-13-U
Read the original on the Federal Register →
You just looked this one up by hand
TrackAD holds all 12,278 of them and matches them against the aircraft you actually look after — airframe, engine, propeller and appliances in one pass — then works out what falls due and when.
- Bring your existing list in from a spreadsheet Paste the rows straight out of Excel. Headers like C/W Date and N/A are read for you.
- A copy that works when this does not One file. No internet, no login, no this software running. For the morning something has to be produced and the computer is not cooperating.
- $5 a month, or $50 a year Up to 50 aircraft on either.
Look round a real shop first Start free
The demonstration shop is eleven real aircraft with a year of work behind them. No account needed.
The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1