A-94-104
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: REQUIRE THE JANAERO DEVICES DIVISION OF ELECTROSYSTEMS, INCORPORATED TO ISSUE A SAFETY (SERVICE) BULLETIN REGARDING OPERATION OF THE JANITROL AIRCRAFT HEATER'S COMBUSTION AIR PRESSURE SWITCHES AND PROPER INSTALLATION OF HEATER FUEL DRAIN LINES. THE BULLETIN SHOULD EXPLAIN THE SWITCH FUNCTION, OUTLINE THE REQUIREMENTS FOR TESTING AND ADJUSTMENT, EMPHASIZE THE POTENTIAL FIRE/EXPLOSION HAZARDS DUE TO IMPROPER SERVICE OR ADJUSTMENT, AND SPECIFICALLY WARN AGAINST ARBITRARILY MOVING THE SWITCH ADJUSTING SCREW TO FACILITATE HEATER OPERATION. INSTRUCTIONS SHOULD ALSO BE INCLUDED TO ASSURE THE FUNCTIONAL INTEGRITY OF FUEL DRAIN LINES.
In plain language (FlightFinder summary)
The National Transportation Safety Board (NTSB) asks the Federal Aviation Administration (FAA) to require the Janaero Devices Division of Electrosystems, Inc. to issue a safety bulletin. The bulletin must explain the combustion air pressure switch function, outline testing and adjustment requirements, highlight fire/explosion hazards from improper service, warn against arbitrary adjustment of the switch screw, and provide instructions to ensure fuel drain line integrity.
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 27, 1995 |
| NTSB number | CHI93IA346 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).