A-89-050
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: ISSUE AN AIRWORTHINESS DIRECTIVE REQUIRING INSPECTION OF THE MAIN LANDING GEAR UPPER LOCK STRUTS ON ALL DEHAVILLAND DHC-7 AIRPLANES TO DETERMINE IF THE PROPERLY CONFIGURED PART IS INSTALLED. IF UPPER LOCK STRUTS WITH PART NO. 15707-3 ARE FOUND, OPERATORS SHOULD INSTITUTE A REPETITIVE INSPECTION FOR CRACKS IN THE AREA OF THE SPRING LOADED CABLE ATTACHMENT BOSS UNTIL A PROPERLY CONFIGURED LOCK STRUT IS INSTALLED.
In plain language (FlightFinder summary)
The FAA is asked to issue an airworthiness directive requiring inspection of the main landing gear upper lock struts on all de Havilland DHC-7 airplanes to confirm the correct part is installed. If struts with part number 15707-3 are found, operators must conduct repetitive inspections for cracks around the spring-loaded cable attachment boss until a properly configured lock strut is installed.
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 | Jun 12, 1990 |
| NTSB number | DEN89IA060 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).