Airworthiness Directive · Amendment 39-14852 · Lockheed Model L-1011 Series Airplanes
Lockheed Model L-1011 Series Airplanes
This AD applies to Lockheed Model L-1011-385-1, L-1011-385-1-14, L-1011-385-1-15, and L-1011-385-3 series airplanes, certificated in any category; having serial numbers 93A through 193Y inclusive and 293A through 293F inclusive: -1002 through -1250 inclusive.
The FAA is adopting a new airworthiness directive (AD) for certain Lockheed Model L-1011 series airplanes. This AD requires a one- time detailed inspection of the C112 harness clamp assembly for proper installation, a one-time detailed inspection of the C112 and C162 harness assemblies for damage, and corrective actions if necessary. This AD results from a report of electrical arcing of the essential bus feeder cables behind hinged circuit breaker panel CB3 P-K. We are issuing this AD to prevent arcing of essential bus feeder cables due to improper installation of the harness C112 clamp assembly, which could result in loss of electrical systems and smoke and/or fire behind the CB3 P-K hinged circuit breaker panel in the flight compartment.
You are responsible for having the actions required by this AD performed within the compliance times specified, unless the actions have already been done.
Within 90 days after the effective date of this AD: Do the actions in paragraphs (f)(1) and (f)(2) of this AD by accomplishing all the actions specified in the Accomplishment Instructions of Lockheed L-1011 Service Bulletin 093-24-142, dated November 16, 2005. Do all applicable corrective actions before further flight.
(1) Perform a one-time detailed inspection of the C112 harness clamp assembly to find incorrectly installed harness clamps, and do all applicable corrective actions.
(2) Perform a one-time detailed inspection of the C112 and C162 harness assemblies to find evidence of chafing, arcing, or deterioration, and do all applicable corrective actions.
Note 1: For the purposes of this AD, a detailed inspection is: “An intensive examination of a specific item, installation, or assembly to detect damage, failure, or irregularity. Available lighting is normally supplemented with a direct source of good lighting at an intensity deemed appropriate. Inspection aids such as mirror, magnifying lenses, etc., may be necessary. Surface cleaning and elaborate procedures may be required.”
