Airworthiness directives › 99-26-06
AD 99-26-06 Airworthiness Directives; Pratt & Whitney JT8D-200 Series Turbofan Engines
Applicability*9
Pratt & Whitney (PW) JT8D-209, -217, -217A, - 217C, and -219 series turbofan engines with combustion chamber outer case (CCOC), part numbers (P/Ns) 5000238-01, 797707, 807684, and 815830 installed. These engines are installed on but not limited to McDonnell Douglas MD-80 series airplanes. Note 1: This airworthiness directive (AD) applies to each engine identified in the preceding applicability provision, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of this AD. For engines 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 accordance with paragraph (f) 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 CCOC cracks, which could result in an uncontained engine failure and damage to the airplane, accomplish the following: Inspections (a) Perform initial and repetitive fluorescent magnetic particle inspections (FMPI) or fluorescent penetrant inspections (FPI) of drain bosses and Ps4 bosses of the CCOC for cracks, and, if necessary, replace with serviceable parts prior to further flight, in accordance with the procedures and intervals specified in paragraph 1.A. of the Accomplishment Instructions of PW Alert Service Bulletin (ASB) No. A6359, Revision 1, dated July 30, 1999. (b) For CCOCs listed by serial number (S/N) in Table 3 of PW ASB No. A6359, Revision 1, dated July 30, 1999, inspect for proper Ps4 and drain boss material, and, if necessary, replace with serviceable parts prior to further flight, in accordance with the procedures and intervals specified in paragraph 1.B. of the Accomplishment Instructions of PW ASB No. A6359, Revision 1, dated July 30, 1999. Effective Date for Computing Compliance Intervals (c) For the purpose of this AD, use the effective date of this AD for computing compliance intervals whenever PW ASB No. A6359, Revision 1, dated July 30, 1999, refers to the publication date of the ASB. Terminating Action (d) At the next part accessibility after the effective date of this AD when the CCOC has accumulated cycles-in-service greater than the initial inspection threshold specified in [[Page 71282]] table 1 of PW ASB A6359, Revision 1, dated July 30, 1999, replace the CCOC with a one-piece machined CCOC assembly, part number (P/N) 815556, in accordance with PW Service Bulletin (SB) No. 6291, dated May 20, 1997, or Revision 1 dated July 9, 1997, or Revision 2, dated August 27,1999. Installation of an improved, one-piece CCOC, P/N 815556, constitutes terminating action to the inspections required by this AD. Definition (e) For the purpose of this AD, part accessibility is defined as an engine disassembly in which the CCOC is removed from the engine. Alternative Methods of Compliance (f) 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, Engine Certification Office. Operators shall submit their request through an appropriate FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Engine Certification Office. (g) 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 aircraft to a location where the requirements of this AD can be accomplished. Incorporation by Reference (h) The actions required by this AD shall be done in accordance with PW ASB No. A6359, Revision 1, dated July 30, 1999, and PW SB No. 6291, dated May 20, 1997, Revision 1, dated July 9, 1997, and Revision 2, dated August 27,1999. 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 Pratt & Whitney, 400 Main St., East Hartford, CT 06108; telephone (860) 565-8770, fax (860) 565-4503. Copies may be inspected at the FAA, New England Region, Office of the Regional Counsel, 12 New England Executive Park, Burlington, MA; or at the Office of the Federal Register, 800 North Capitol Street, NW, suite 700, Washington, DC. (i) This amendment becomes effective on February 22, 2000. Issued in Burlington, Massachusetts, on December 8, 1999. David A. Downey, Assistant Manager, Engine and Propeller Directorate, Aircraft Certification Service. [FR Doc. 99-32506 Filed 12-20-99; 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