What was found
APU SIGMA SEAL HEIGHT IS OUT OF LIMITS IAW TC 78349000. ACFT GROUNDED. R & R SIGMA SEAL IAW AMM 49-15-11-000-801 & 49-15-11-400-801.
- Difficulty date
- February 15, 2015
- Submitted
- February 17, 2015
- Operation
- Air carrier
- Aircraft
- N563AS
- Make and model
- Boeing 737890
- Aircraft serial
- 35180
- Aircraft time
- 31,789 hours, 9,687 cycles
- System (JASC)
- 4900 · Airborne Auxiliary Power Unit (APU) System
- Part
- Seal
- Part number
- 353A40801
- Condition
- Out Of Limits
- Location
- Apu
- Stage of operation
- IN
- How discovered
- 9
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.