- Difficulty date
- July 27, 2007
- Submitted
- August 24, 2007
- Operation
- Air carrier
- Aircraft
- N537MC
- Make and model
- Boeing 747271C
- Aircraft serial
- 22403
- Aircraft time
- 97,429 hours, 19,113 cycles
- Part
- Spar Cap
- Condition
- Damaged
- Location
- Zone 300
- 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
HORIZONTAL STAB RT AFT CRACK INDICATION/HOLE DAMAGED AT RT HORIZ SPAR CAP RT SIDE OTBD OF 43.5 INBD FWD HOLE. REAMED DAMAGED HOLE TO FIRST OVERSIZE (.450-.453) IAW SB 747-55A2050. NDT FINDS NO DEFECTS. BOLTS INSTALLED ON CARD 8010 / 8011.