2002-03-02 British Aerospace: Amendment 39-12643; Docket No. 2000-CE-58-AD; Supersedes AD 98-13-03, Amendment 39-10591.
(a) What airplanes are affected by this AD? This AD affects the following airplane models and serial numbers that are certificated in any category:
Model
Serial No.
HP.137 Jetstream Mk.1
All serial numbers.
Jetstream Series 200
All serial numbers.
Jetstream Series 3101
601 through 695 that do not have Jetstream Service Bulletin 57-JM 5218 incorporated (using the applicable Revision 4 or Revision 5 pages).
(b) Who must comply with this AD? Anyone who wishes to operate any of the airplanes identified in paragraph (a) of this AD must comply with this AD.
(c) What problem does this AD address? The actions specified by this AD are intended to detect, correct, and prevent future fatigue cracking of the main landing gear (MLG), which could result in structural failure of the MLG and consequent loss of airplane control during takeoff, landing, or taxi operations.
Note 1: The compliance times of this AD are presented in landings. If you do not keep the total number of landings, then you may multiply the total number of airplane hours time-in-service (TIS) by 0.75.
(d) What actions must I accomplish to address this problem? To address this problem, you must accomplish the following:
Actions
Compliance
Procedures
(1) For the Models HP.137 Jetstream Mk.1 and Jetstream 200 Series airplanes, accomplish the following if part number (P/N) 1379133B1 (or FAA-approved equivalent P/N) and P/N 1379133B2 (or FAA-approved equivalent P/N) MLG hinge fittings are not installed. These installations incorporate Modification 5218:
(i) Inspect the MLG hinge attachment nuts to auxiliary and aft spars on both the left and right MLG for signs of fuel leakage or signs of relative movement between the nuts and hinge fitting.
(ii) If any signs of fuel leakage or relative movement between the nuts and hinge fitting are found during any inspection required by paragraph (d)(1)(i) of this AD, resecure the MLG hinge fitting to auxiliary spar.
(iii) You may terminate the above inspections when Modification 5218 is incorporated. The repetitive inspection of the MLG hinge support angles as required by paragraph(d)(2) of this AD are still required.
Inspect within the next 50 landings after June 8, 1998 (the effective date of AD 98-13-03) or within 200 landings TIS after the last inspection required by 98-13-03, whichever occurs later, and thereafter at intervals not to exceed 200 landings. Resecure the MLG hinge fitting prior to further flight after the applicable inspection.
Use the service information presented in paragraph (h)(1)(i) of this AD.
(2) For all airplanes regardless of the MLG hinge fitting installed, inspect the MLG hinge support angles for cracks. If any crack(s) is/are found in the support angles, replace the cracked MLG hinge fitting(s) with a P/N 1379133B1 (or FAA-approved equivalent P/N) or P/N 1379133B2 (or FAA-approved equivalent P/N) fitting.
(i) For all airplanes: you may terminate the repetitive inspection requirement of paragraphs (d)(1)(i) and (d)(1)(ii) of this AD after incorporating Modification JM5218 on both sides of the airplane.
(ii) For Jetstream 3101 Series airplanes: the repetitive inspections of the MLG support angles required by paragraph (d)(2) of this AD are no longer required after incorporating Modification JM5218 on both sides of the airplane.
(iii) If Modification JM5218 is incorporated on both sides of a Jetstream 3101 Series airplane in accordance with the provisions of AD 98-13-03, then the intent of paragraph (d)(3) of this AD is met and paragraph (d)(4) of this AD is the only paragraph that applies.
(iv) For the affected Models HP.137 Jetstream Mk.1 and Jetstream Series 200 airplanes: the repetitive inspections of the MLG support angles required by paragraph (d)(2) of this AD are still required after incorporating Modification JM5218.
Inspect upon accumulating 4,000 landings on each MLG hinge fitting or within the next 50 hours TIS after April 2, 2002 (the effective date of this AD), whichever occurs later, unless already accomplished, and thereafter at intervals not to exceed 400 hours TIS. Accomplish any necessary replacement prior to further flight after the inspection where the cracked support angle(s) is/are found.
Inspect in accordance with the service information presented in paragraph (h)(1)(ii) or (h)(1)(iii) of this AD, as applicable. Replace in accordance with the service information presented in paragraph (h)(1)(iv) of this AD.
(3) For all airplanes, install improved design MLG hinge fittings, P/N 1379133B1 (or FAA-approved equivalent P/N) and P/N 1379133B2 (or FAA-approved equivalent P/N). These installations incorporate Modification JM5218.
(i) For all airplanes: you may terminate the repetitive inspection requirement of paragraphs (d)(1)(i) and (d)(1)(ii) of this ADafter incorporating Modification JM5218 on both sides of the airplane.
(ii) For Jetstream 3101 Series airplanes: the repetitive inspections of the MLG support angles required by paragraph (d)(2) of this AD are no longer required after incorporating Modification JM5218 on both sides of the airplane.
(iii) If Modification JM5218 is incorporated on both sides of a Jetstream 3101 Series airplane in accordance with the provisions of AD 98-13-03, then the intent of paragraph (d)(3) of this AD is met and paragraph (d)(4) of this AD is the only paragraph that applies.
(iv) For the affected Models HP.137 Jetstream Mk.1 and Jetstream Series 200 airplanes: the repetitive inspections of the MLG support angles required by paragraph (d)(2) of this AD are still required after incorporating Modification JM5218.
Upon accumulating 20,000 landings on each MLG hinge fitting or within the next 50 landings after June 8, 1998 (the effective date of AD 98-13-03), whichever occurs later, unlessalready accomplished.
Inspect in accordance with the service information presented in paragraph (h)(1)(iv) of this AD.
(4) Do not install, on any affected airplane, MLG hinge fittings that are not P/N 1379133B1 (or FAA-approved equivalent P/N) or P/N 1379133B2 (or FAA-approved equivalent P/N).
As of April 2, 2002 (the effective date of this AD).
Not Applicable.
(e) Can I comply with this AD in any other way?
(1) You may use an alternative method of compliance or adjust the compliance time if:
(i) Your alternative method of compliance provides an equivalent level of safety; and
(ii) The Manager, Standards Office, Small Airplane Directorate, approves your alternative. Submit your request through an FAA Principal Maintenance Inspector, who may add comments and then send it to the Manager, Standards Office, Small Airplane Directorate.
(2) Alternative methods of compliance approved in accordance with AD 98-13-03, which is superseded by this AD, are approved as alternative methods of compliance with this AD.
Note 2: This AD applies to each airplane identified in paragraph (a) of this AD, regardless of whether it has been 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 accordance with paragraph (e) 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 you have not eliminated the unsafe condition, specific actions you propose to address it.
(f) Where can I get information about any already-approved alternative methods of compliance? Contact Doug Rudolph, Aerospace Engineer, FAA, Small Airplane Directorate, 901 Locust, Room 301, Kansas City, Missouri 64106; telephone: (816)329-4059; facsimile: (816) 329-4090.
(g) What if I need to fly the airplane to another location to comply with this AD? The FAA can issue a special flight permit under sections 21.197 and 21.199 of the Federal Aviation Regulations (14 CFR 21.197 and 21.199) to operate your airplane to a location where you can accomplish the requirements of this AD.
(h) Are any service bulletins incorporated into this AD by reference?
(1) Actions required by this AD must be done in accordance with the following:
(i) British Aerospace Jetstream Mandatory Service Bulletin No. 7/5, which applies to the affected Models Model HP.137 Jetstream Mk.1 and Jetstream Series 200 airplanes and incorporates the following pages:
Pages
Revision level
Date
2 and 4
Original Issue
March 31, 1982.
1 and 3
Revision 1
May 23, 1988.
(ii) British Aerospace Mandatory Service Bulletin No. 7/8, which applies to the affected Models HP.137 Jetstream Mk.1 and Jetstream Series 200 airplanesand incorporates the following effective pages:
Pages
Revision level
Date
2, 5, 6, 7, and 8
Revision 2
January 6, 1983.
1, 3, and 4
Revision 3
May 23, 1988.
(iii) Jetstream Alert Service Bulletin 32-A-JA 850127, which applies to the affected Jetstream Series 3101 airplanes and incorporates the following effective pages:
Pages
Revision level
Date
5 through 14
Original Issue
April 17, 1985.
1 through 4
Revision 2
November 11, 1994.
(iv) Jetstream Service Bulletin 57-JM 5218, which applies to all of the affected airplanes and incorporates the following effective pages:
Pages
Revision level
Date
11, 12, 17, 18, 19, 21, 22, 23, 24, 27, 28, 29, 30, and 31
Revision 1
September 29, 1987.
20
Revision 3
January 29, 1990.
13 and 14
Revision 4
October 31, 1990.
1 through 10, 15, 16, 25, and 26
Revision 5
July 28, 1997.
(2) The Director of the Federal Register approved this incorporation by reference under 5 U.S.C. 552(a) and1 CFR part 51.
(3) You can get copies from British Aerospace Regional Aircraft, Prestwick International Airport, Ayrshire, KA9 2RW, Scotland. You can look at copies at FAA, Central Region, Office of the Regional Counsel, 901 Locust, Room 506, Kansas City, Missouri, or at the Office of the Federal Register, 800 North Capitol Street, NW, suite 700, Washington, DC.
(i) Does this AD action affect any existing AD actions? This amendment supersedes AD 98-13-03, Amendment 39-10591.
(j) When does this amendment become effective? This amendment becomes effective on April 2, 2002.