Service difficulty report · Spar Web · Lkheed 10113851

Difficulty date
May 20, 1997
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N733DS
Make and model
Lkheed 10113851
Aircraft serial
193C1224
System (JASC)
5711 · Wing Spar
Part
Spar Web
Part number
1642705
Condition
Cracked
Location
Rt Wing
Stage of operation
IN
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 ACCOMPLISHING DAL SPECIAL INSP 7-55740-12AD, REAR SPAR WEB INSPECTION FOR FATIGUE CRACKS, ONE FASTENER HOLE WAS OVERSIZED BEYOND THE MAX LIMITS DICTATED ON LAC DWG 1642705 REVISION E. THE HOLE, WAS PREVIOUSLY OVERSIZED AT LAST INSP TO REMOVE CRACKS TO A MAX DIA OF 0.331, AFTER COLD WORKING A FINAL DIAM OF 0.342. THE CURRENT INSP REQUIRES THE HOLE TO AGAIN BE OVERSIZED .0156 TO REMOVE SURFACE SCRATCHES. REV B IS ADDED DURING THE A/C HMV VISIT IN ATL TO PROVIDE PERMANENT INST TO THIS ER/A. EO 7-56199-3 SPAR WEB REPLACEMENT MODIFICATION WILL BE ACCOMP DURING MAINTENANCE VISIT.