What was found
AT GATE AN ACRID ODOR WAS REPORTED WITH APU SUPPLYING THE LEFT PACK. AIRCRAFT GROUNDED. MAINTENANCE FOUND THE APU OIL SEQUENCING SWITCH LEAKING. REMOVED AND REPLACED SWITCH. SYSTEM CHECKED NORMAL.
- Difficulty date
- August 3, 2016
- Submitted
- August 9, 2016
- Operation
- Air carrier
- Aircraft
- N964TW
- Make and model
- Doug DC983
- Aircraft serial
- 53614
- Aircraft time
- 46,963 hours, 22,791 cycles
- System (JASC)
- 4990 · APU Oil System
- Part
- Switch
- Part number
- 6925259
- Part serial
- 04232
- Condition
- Leaking
- Location
- Apu
- Stage of operation
- TX
- How discovered
- O
- Nature of condition
- K, B
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.