- Difficulty date
- April 30, 2021
- Submitted
- June 3, 2021
- Operation
- Air carrier
- Aircraft
- N738CB
- Make and model
- Boeing 7377H4
- Aircraft serial
- 27870
- Aircraft time
- 74,656 hours, 44,175 cycles
- Part
- Stringer
- Condition
- Cracked
- Location
- Bs 540 S25r
- 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
CRACK STRINGER 25R LOCATED BS 540 FWD CARGO COMPARTMENT / REPAIRED STRINGER 25R LOCATED BS 540 FWD CARGO COMPARTMENT IAW B737-700 SRM 53-00-03-2R-1 FIGURE 206-7 STRINGER SECTION MATERIAL CONDITION 7075T6 0.036'. -2 CHANNEL; -3 CHANNEL (2EA) MATERIAL CONDITION 7075T6 0.040' AND PERFORMED HEAT TREATMENT IAW BAC 5602 AND APPLIED PROTECTIVE TREATMENT ON REPAIR AREA AND REPAIR PART IAW B737-700 SRM 51-20-01