A-90-102
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: ISSUE AN AIRWORTHINESS DIRECTIVE APPLICABLE TO ALL 14 CFR PART 121 AIRPLANES TO REQUIRE, AT THE NEXT SCHEDULED MAJOR MAINTENANCE INSPECTION, AN INSPECTION OF THE WIRES IN WIRE BUNDLES IN THE WINGS WHERE ADDITIONAL WIRING HAS BEEN ADDED SINCE THE AIRPLANE WAS MANUFACTURED. THE INSPECTION SHOULD BE DIRECTED TO THE DETERMINATION OF INSULATION DAMAGE WHERE THE WIRE BUNDLE IS UNDER CLAMPS AND INSIDE VAPOR SEALS AND PRESSURE SEALS.
In plain language (FlightFinder summary)
The FAA is asked to issue an airworthiness directive requiring all Part 121 airplanes to inspect, at the next major maintenance, wing wire bundles that had additional wiring added after manufacture, focusing on insulation damage under clamps and inside vapor and pressure seals.
This plain-language summary is written by FlightFinder to explain the recommendation above. It is not the official wording — the verbatim NTSB text is quoted above.
Details
| Status | Closed - Unacceptable Action |
|---|---|
| Mode | Aviation |
| Closed | Mar 24, 1992 |
| NTSB number | DCA90RA028 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).