A-89-006
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: ISSUE AN AIRWORTHINESS DIRECTIVE APPLICABLE TO BEECH MODELS A36TC AND B36TC AIRPLANES REQUIRING WITHIN THE NEXT 100 HOURS OF FLIGHT AND EVERY 100 HOURS THEREAFTER AN INSPECTION OF TURBOCHARGER INLET ASSEMBLIES, TELEDYNE CONTINENTAL MOTORS (TCM) PART NO. 642668, FOR EVIDENCE OF CRACKED WELD-JOINTS. IF CRACKS OR OTHER SUBSTANTIAL DEFECTS ARE DISCOVERED, THE WELDED ASSEMBLY SHOULD BE REMOVED AND REPLACED WITH TCM PART NO. 646795 CAST INLET ASSEMBLY BEFORE FURTHER FLIGHT. THE INSTALLATION OF EITHER ASSEMBLY SHOULD BE PERFORMED IN ACCORDANCE WITH BEECHCRAFT SERVICE COMMUNIQUE NO. 70 REGARDING THIS SUBJECT.
In plain language (FlightFinder summary)
The Federal Aviation Administration is asked to issue an airworthiness directive for Beech A36TC and B36TC airplanes, requiring inspection of turbocharger inlet assemblies (part number 642668) for cracked weld-joints every 100 hours of flight. If cracks or other substantial defects are found, the welded assembly must be replaced with a cast inlet assembly (part number 646795) before further flight, with installation following Beechcraft Service Communique No. 70.
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 1, 1990 |
| NTSB number | MIA87FA091 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).