A-88-050
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: ISSUE AN AIRWORTHINESS DIRECTIVE TO REQUIRE ULTRASONIC INSPECTION OF THE WING LANDING GEAR SUPPORT BEAM FITTINGS ON ALL BOEING 747 AIRPLANES AT AN APPROPRIATE INSPECTION THRESHOLD TIME INTERVAL. REPAIR OF CRACKED OR CORRODED FITTINGS FOUND DURING THE INSPECTION SHOULD INCORPORATE INCREASED CORROSION PROTECTION MEASURES UPON REASSEMBLY OF THE FITTING.
In plain language (FlightFinder summary)
The Federal Aviation Administration is asked to require ultrasonic inspections of the wing landing gear support beam fittings on all Boeing 747 airplanes, with an appropriate inspection threshold time interval, and to mandate that any cracked or corroded fittings found during these inspections be repaired with increased corrosion protection measures upon reassembly.
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 - Acceptable Action |
|---|---|
| Mode | Aviation |
| Closed | Nov 8, 1989 |
| NTSB number | DCA88RA018 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).