A-06-085
NTSB Safety Recommendation — Aviation
Recommendation text
TO THE FEDERAL AVIATION ADMINISTRATION: Revise Advisory Circular (AC) 20-24B to include guidance to ensure that each time a new engine/oil combination is introduced, procedures are developed and implemented to inspect, at appropriate intervals, those areas within the engine where testing or in-service experience has indicated porous carbon formation is likely and has the potential to result in hazardous oil system or engine behavior. AC 20-24B should also provide criteria for evaluating the results of these engine inspections to aid operators in determining whether continued operation is safe or whether the engine/oil combination should be discontinued.
In plain language (FlightFinder summary)
The FAA is asked to revise Advisory Circular (AC) 20-24B by adding guidance that requires procedures to inspect engines at appropriate intervals for porous carbon formation, a condition that can lead to hazardous oil system or engine behavior, whenever a new engine/oil combination is introduced. The revised AC should also include criteria for evaluating inspection results so operators can determine if continued operation is safe or if the combination should be discontinued.
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 | Mar 28, 2012 |
| NTSB number | DCA04IA002 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).