- Difficulty date
- May 10, 2011
- Submitted
- May 20, 2011
- Operation
- Air carrier
- Aircraft
- N740WA
- Make and model
- Boeing 7474H6
- Aircraft serial
- 25700
- Aircraft time
- 71,044 hours, 9,386 cycles
- Engine
- Pwa PW4056
- Part
- Frame
- Condition
- Cracked
- Location
- Bs 1160
- 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
CRACK RT BS 1160 FRAME 1 EA HOLE ( AFTER 0.313 OVERSIZE REAMING) CRACK STILL PROGRESSING. TRIMMED OUT CRACK AT FRAME BS1160 IAW SRM 53-40-07. HFEC AREA NO CRACKS FOUND IAW SRM 51-00-00 FIG 3 PG 6. FABRICATED PARTS IAW SRM 53-40-07 FIG 201. INSTALLED PER SRM 53-40-07 FIG 201 FRAME.