Service difficulty report · Spar Cap · Boeing 747271C

Difficulty date
July 24, 2007
Submitted
July 26, 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
Cracked
Location
Horizontal Stab
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 STABILIZER UPPER AFT CRAFT INDICATION/HOLE DAMAGE AT LT HORIZONTAL SPAR CAP INBD OF LBL 43.5 INBD AFT HOLE. REAMED DAMAGED HOLE TO FIRST OVERSIZE (.450-.453) IAW SB 747-55A2050. NDT FINDS NO DEFECTS. BOLTS INSTALLED ON CARDS NR 8010/8011.