Service difficulty report · Skin · Boeing 747123

Difficulty date
February 11, 1997
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N671UP
Make and model
Boeing 747123
Aircraft serial
20323
Part
Skin
Condition
Corroded
Location
Bs 1050
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

INSPECTION TYPE-C, CENTRE SECTION WING BOX: CENTRE WING TANK UPPER SKIN IS CORRODED AT BS 1050 BETWEEN RBL 82 AND RBL 88. REMOVED CORROSION OF UPPER SKIN AT BS 1050 RBL 82 TO RBL 88 ACC SRM 51-10-01, WITHIN LIMITS ACC SRM 57-30-01. REMOVED CORROSION OF STR 27-C UPPER CHORD BS 1050 RBL 80, OUT OF LIMIT ACC SRM 57-10-01. REPAIRED UPPER CHORD ACC EFN 747-57-0357 (KLM DFX 97-028).