What was found
APU FIRE BELL SOUNDS OFF AND CANNOT BE SILENCED. NO WARNING LIGHTS OR OTHER INDICATIONS THAT A PROBLEM EXISTS. REMOVED, CLEANED AND REINSTALLED APU FIRE DETECTOR POWER UNIT. SYSTEM OPS. CHECK NORMAL IAW MM. (K)
- Difficulty date
- April 11, 2005
- Submitted
- May 10, 2005
- Operation
- Air carrier
- Aircraft
- N7642U
- Make and model
- Boeing 727222
- Aircraft serial
- 19915
- Engine
- Pwa JT8D5
- System (JASC)
- 2612 · Fire Detection
- Part
- Warning System
- Condition
- Malfunctioned
- Location
- Apu Fire
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- N
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.