A-95-075
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FAA: ISSUE AN AIRWORTHINESS DIRECTIVE REQUIRING THE REPLACEMENT OF MAGNESIUM PISTONS IN HYDRAULIC FUSES INSTALLED ON BOEING 737-100 & -200 SERIES AIRPLANES & IDENTIFIED BY WATERMAN PART NUMBERS G838-8-40, G838-8-40, G838-8-60, & G838-8-160, & ON BOEING 747-100 & -200 SERIES AIRPLANES & IDENTIFIED BY WATERMAN PART NUMBER G905-120, WITH ALUMINUM PISTONS BEFORE COMPLETING THE NEXT C CHECK OR 3000 FLIGHT HOURS, WHICHEVER OCCURS FIRST.
In plain language (FlightFinder summary)
The FAA is asked to issue an airworthiness directive mandating the replacement of magnesium pistons with aluminum pistons in hydraulic fuses on Boeing 737-100 and -200 series airplanes (Waterman part numbers G838-8-40, G838-8-60, and G838-8-160) and Boeing 747-100 and -200 series airplanes (Waterman part number G905-120). The replacement must be completed before the next C check or within 3000 flight hours, whichever occurs first.
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 | Jan 28, 1997 |
| NTSB number | DCA95RA017 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).