A-83-059
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: ISSUE AN EMERGENCY AIRWORTHINESS DIRECTIVE TO OPERATORS OF SWEARINGEN SA 226-TC METRO AIRPLANES TO REQUIRE AN IMMEDIATE INSPECTION OF HYDRAULIC TUBING AND OXYGEN LINES IN THE VICINITY OF THE ELECTRICAL CIRCUIT BREAKER PANEL ON THE COPILOT'S SIDE CONSOLE AND BEHIND THE INSTRUMENT PANEL. THE INSPECTION SHOULD BE CONDUCTED ACCORDING TO A PROCEDURE ADEQUATE TO DETECT LEAKAGE OR STRESS CRACKS WHICH COULD CAUSE FUTURE LEAKAGE WHEN THE SYSTEMS ARE PRESSURIZED. REQUIRE IMMEDIATE REPLACEMENT OF HYDRAULIC OR OXYGEN LINES EXHIBITING DEFECTS. FURTHER, REQUIRE OPERATORS TO COMPLY WITH FAIRCHILD AIRCRAFT CORPORATION SERVICE BULLETIN 32-018 TO USE FIRE-RESISTANT HYDRAULIC FLUID. (URGENT)
In plain language (FlightFinder summary)
The NTSB asks the FAA to issue an emergency airworthiness directive requiring operators of Swearingen SA 226-TC Metro airplanes to inspect hydraulic tubing and oxygen lines near the electrical circuit breaker panel on the copilot's side console and behind the instrument panel. The inspection must detect leaks or stress cracks that could cause leakage under pressure, and any defective lines must be replaced immediately. Operators are also required to follow Fairchild Aircraft Corporation Service Bulletin 32-018 to use fire-resistant hydraulic fluid.
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 | Feb 21, 1984 |
| NTSB number | DCA83AA037 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).