Airworthiness directives › 98-06-12
AD 98-06-12 Airworthiness Directives; Eurocopter France Model AS-350B, BA, B1, B2, and D Helicopters, and Model AS 355E, F, F1, F2, and N Helicopters
Models named: AS-350B, BA, B1, B2, D, AS 355E, F, F1, F2, N. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
Model AS-350B, BA, B1, B2, and D helicopters, and Model AS 355E, F, F1, F2, and N helicopters, certificated in any category. Note 1: This AD applies to each helicopter 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 helicopters that have been modified, altered, or repaired so that the performance of the requirements of this AD is affected, the owner/operator must use the authority provided in paragraph (c) to request approval from the FAA. This approval may address either no action, if the current configuration eliminates the unsafe condition, or different actions necessary to address the unsafe condition described in this AD. Such a request should include an assessment of the effect of the changed configuration on the unsafe condition addressed by this AD. In no case does the presence of any modification, alteration, or repair remove any helicopter from the applicability of this AD.
Compliance
Required within 10 hours time-in-service (TIS), unless accomplished previously. To identify and remove the weaker bolts and to prevent the separation of the tailboom from the helicopter, and subsequent loss of control of the helicopter, accomplish the following: (a) For helicopters that either were delivered from the manufacturer with zero-time before May 16, 1997, were overhauled before May 16, 1997, or have had any tailboom attachment bolt (bolt), part number (P/N) 22201BC06008L, replaced after July 1, 1994: (1) Inspect the markings on each of the 23 bolts located above the baggage compartment floor. (2) Remove any of the 23 bolts, P/N 22201BC06008L, that are marked with the letter ``M'' above the designation ``BC'' and replace each of them, one-by-one, with an airworthy bolt, P/N 22201BC06008L, that is marked with a letter other than ``M''. Torque each replacement bolt to between 67 and 79 inch-lbs. using only new nuts. Note 2: These inspections and replacements are not required for helicopters that were delivered from the manufacturer with zero-time after May 15, 1997, were overhauled after May 15, 1997, and have had no bolt, P/N 22201BC06008L, replaced after July 1, 1994. Note 3: The inspection and replacement of the 4 bolts located below the baggage compartment are not required by this AD. Note 4: Eurocopter France AS 350 Service Telex No. 01.00.46, Eurocopter France AD 355 Service Telex No. 01.00.43, and Work Card 53.00.00.402 pertain to this AD. (b) Replacement of all the bolts, P/N 22201BC06008L, with airworthy bolts [[Page 12410]] marked with a letter other than ``M'' constitutes terminating action for the requirements of this AD. (c) 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, Rotorcraft Standards Staff, Rotorcraft Directorate, FAA. Operators shall submit their requests through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Rotorcraft Standards Staff. Note 5: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Rotorcraft Standards Staff. (d) 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 helicopter to a location where the requirements of this AD can be accomplished. (e) This amendment becomes effective on March 30, 1998. Note 6: The subject of this AD is addressed in Direction Generale De L'Aviation Civile (France) AD 97-146-054(AB) and AD 97- 147-072(AB), both dated July 16, 1997. Issued in Fort Worth, Texas, on March 5, 1998. Eric Bries, Acting Manager, Rotorcraft Directorate, Aircraft Certification Service. [FR Doc. 98-6449 Filed 3-12-98; 8:45 am] BILLING CODE 4910-13-U
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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