Airworthiness Directive · Amendment 39-11871 · Boeing Model 767-200, -300, and -300F Series Airplanes
Boeing Model 767-200, -300, and -300F Series Airplanes
Model 767-200, -300, -300F series airplanes; line numbers 1 through 739 inclusive; certificated in any category.
Note 1: This AD applies to each airplane 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 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 (b) 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.
This amendment adopts a new airworthiness directive (AD), applicable to certain Boeing Model 767-200, -300, and -300F series airplanes. This AD requires either an inspection to detect damage or chafing of the insulation or wires, modification of the cable assembly, and repairs, if necessary; or replacement of the cable assembly of the lower anti-collision light with a new cable assembly. This amendment is prompted by reports of electrical arcing on structure near the lower body anti-collision light due to chafing of the cable. The actions specified by this AD are intended to prevent such chafing as a result of improper installation of the lower body anti-collision light assembly, which could result in electrical arcing or sparking in a flammable leakage zone of the airplane.
To prevent chafing as a result of improper installation of the cable assembly of the lower body anti-collision light, which could result in electrical arcing or sparking in a flammable leakage zone of the airplane, accomplish the following:
(a) Within 1,800 flight hours after the effective date of this AD, perform the actions in either paragraph (a)(1) or (a)(2) of this AD in accordance with Boeing Service Bulletin 767-33A0075, Revision 1, dated May 27, 1999.
(1) Perform a one-time general visual inspection to detect damage or chafing of the insulation or wires, and modify the cable assembly of the lower body anti-collision cable assembly. If any damage or chafing is detected, prior to further flight, repair the damaged or chafed part.
Note 2: Boeing Service Bulletin 767-33A0075, Revision 1, dated May 27, 1999, refers to Grimes Service Bulletin 60-3414-33-SB01, dated December 8, 1998, as an additional source of service information for accomplishment of the modification required by paragraph (a)(1) of this AD. Since the issuance of the Boeing service bulletin, Grimes has issued Service Bulletin 60-3414-33-SB01, Revision 1, dated March 13, 2000. Revision 1 of the Grimes service bulletin is an additional source of service information for accomplishment of the modification required by paragraph (a)(1) of this AD.
Note 3: For the purposes of this AD, a general visual inspection is defined as “A visual examination of an interior or exterior area, installation, or assembly to detect obvious damage, failure, or irregularity. This level of inspection is made under normally available lighting conditions such as daylight, hangar lighting, flashlight, or drop-light, and may require removal or opening of access panels or doors. Stands, ladders, or platforms may be required to gain proximity to the area being checked.”
(2) Replace the cable assembly of the lower body anti-collision cable assembly with a new cable assembly.
