Service difficulty report · Drive Unit · Boeing 737990ER
FAA SDR system
- Difficulty date
- September 2, 2021
- Submitted
- September 7, 2021
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 41735
- Aircraft time
- 26,771 hours, 8,604 cycles
- Part
- Drive Unit
- Part number
- 6225135822
- Part serial
- 18RXV2
- Condition
- Intermittent
- Location
- Wx Radar Antenna
- Part time
- 34,186 hours, 9,952 cycles
- Stage of operation
- NR
- How discovered
- 9
- Nature of condition
- J
- Precautionary procedure
- O
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WXR FAIL, PWS FAIL, ANT AMBER WARNINGS ON NAVIGATION DISPLAYS. GROUNDED - YES. CONFIRMED ANT AND PWS FAIL INTERMITTENTLY DURING WX TEST. REMOVED AND REPLACED WXR ANTENNA DRIVE UNIT REF AMM 34-43-11. OPS CHECKS GOOD. GROUND VERIFICATION GOOD.