- Difficulty date
- November 30, 2005
- Submitted
- December 6, 2005
- Operation
- Air carrier
- Aircraft
- N921UA
- Make and model
- Boeing 737522
- Aircraft serial
- 25388
- Aircraft time
- 38,186 hours, 28,218 cycles
- Engine
- Cfmint CFM563C1
- Part
- Stringer
- Condition
- Cracked
- Location
- Str 6r At Sta 72
- 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.
What was found
STRINGER 6R CRACKED AT STATION 727B. REMOVED 22.5" SECTION OF STRINGER. ACP NDT VERIFICATION OF CRACK CONTAINMENT. FABRICATED STRINGER SECTION & REPAIR "Z" ANGLES & HEAT TREATED. INSTALLED NESTED "Z" ANGLES REPAIR PER SRM53-00-03 #3, SRM 51-40-01 & SRM 51-40-03. REPLACED ADJACENT STRINGER CLIPS PER SRM 51-40-02.