What was found
***CORROSION*** ON SUBTHRESHOLD WEB AT FCB BS440 - BS493 RBL28 WL157. / REMOVED AND REPLACED SUBTHRESHOLD P/N 143A8122-10 AT FCB. BS440-BS493 RBL28 WL157 IAW SRM 51-40-02 AND DGW 143A8120 AN DWG 143A8330. 88920U 02MAY20
- Difficulty date
- April 24, 2020
- Submitted
- May 18, 2020
- Operation
- Air carrier
- Aircraft
- N472WN
- Make and model
- Boeing 7377H4
- Aircraft serial
- 33831
- Aircraft time
- 55,520 hours, 32,985 cycles
- System (JASC)
- 5320 · Fuselage Miscellaneous Structure
- Part
- Web
- Condition
- Corroded
- Location
- Fuselage
- 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.