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
- 141A743444
- 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
FLIGHT DECK ENTRY FLOOR STRUCTURE TOP SURFACE AT STA.260 HAS MULTIPLE CORROSION BETWEEN LBL10 AND RBL10 AS MARKED. (DOT ATTACH). GROUNDED - YES. REMOVED CORROSION. ORIGINAL THICKNESS 0.094 IAW BAC DWG 141A7434 REV E AND BAC 1503-100146. REMAINING THICKNESS AT LOWEST BLEND 0.087, REMOVED 0.007. WITHIN ALLOWABLE LIMITS IAW B737-900ER SRM 53-10-51-1A-1. ALODINED IAW B737-900ER SRM 51-21-01. PRIMED IAW BOEING SOPM 20-41-02. MARKED BLEND AREAS IAW B737-900 AMM PGBLK 51-05-01-701REMOVED DOT.