- Difficulty date
- April 14, 2007
- Submitted
- May 19, 2007
- Operation
- Air carrier
- Aircraft
- N788AT
- Make and model
- Boeing 727214
- Aircraft serial
- 21958
- Aircraft time
- 38,916 hours, 59,731 cycles
- Part
- Torque Box
- Condition
- Cracked
- Location
- Bs 1223
- 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
WHILE IN "C" CHECK, AFT STAIRWELL RT TORQUE BOX HAS CRACK AT INBD WEB LIGHTENING HOLE STA 1223. STOP DRILLED CRACK IAW B727 SRM 51-10-1, FABRICATED REPAIR DOUBLER 7075T6 .025 PO NR 9004219 6.6" BY 3.75" IAW B727 SRM 53-10-2 FIG 6. TREATED AND PRIMED IAW B727 SRM 51-10-2. INSTALLED DOUBLER IAW B727 SRM 51-40-2 FIG 1.