What was found
APU FIRE WARNING HORN SOUND DISTORTED WHILE TESTING. GROUNDED - YES. OPENED AND COLLARED ON C/B. REMOVED AND REPLACED APU FIRE WARNING HORN. REMOVED COLLAR AND CLOSED 1 C/B. PERFORMED GOOD INSTALLATION TEST REF AMM 26-15-02/401.
- Difficulty date
- October 13, 2023
- Submitted
- October 16, 2023
- Operation
- Air carrier
- Aircraft
- N593AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35107
- Aircraft time
- 56,903 hours, 17,019 cycles
- System (JASC)
- 2610 · Detection System
- Part
- Warning Horn
- Part number
- 01077066600
- Condition
- Malfunctioned
- Location
- P28 Panel
- Stage of operation
- IN
- How discovered
- O
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.