Service difficulty report · Floor Support · Boeing 737990ER
FAA SDR system
- Difficulty date
- September 27, 2023
- Submitted
- October 12, 2023
- Operation
- Air carrier
- Make and model
- Boeing 737990ER
- Aircraft serial
- 40714
- Aircraft time
- 35,649 hours, 11,031 cycles
- Part
- Floor Support
- Part number
- 147A56603
- Part serial
- NSN
- Condition
- Corroded
- Location
- Unknown
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION AT LAV "E" AFT INBD MOUNT FLOOR SUPPORT. (CIRCLED IN RED). GROUNDED - YES. REMOVED CORROSION.ORIGINAL THICKNESS 0.205 IAW BAC DWG 147A5660 REV.REMAINING THICKNESS 0.111,REMOVED 0.094.OUT OF LIMITS IAW B737-900ER SRM 53-70-51-1A-1.REMOVED FLOOR SUPPORT/ INTERCOSTAL IAW B737-900ER SRM 51-40-02.DRILLED TO FIT NEW FLOOR SUPPORT/ INTERCOSTAL IAW B737-900ER SRM 51-40-05 AND BAC DWG 147A5650 REV-.INSTALLED NEW FLOOR SUPPORT/ INTERCOSTAL IAW B737-900ER SRM 51-40-02 AND BAC DWG 147A5650 REV-.