Service difficulty report · Skin · Boeing 7377H4

Difficulty date
March 21, 2021
Submitted
March 25, 2021
Operation
Air carrier
Aircraft
N717SA
Make and model
Boeing 7377H4
Aircraft serial
27851
Aircraft time
76,395 hours, 45,467 cycles
Part
Skin
Condition
Cracked
Location
Bs 639
Stage of operation
IN
How discovered
E
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

REF LP 0990749 WHILE PERFORMING EA 1-A53-36784 AND MT 5331-I-11783-NG PART 6; 53-30-25 FOUND CRACK INDICATION AT BS 639 + 9' S4R AT CHEM MILLED EDGE. CRACK WAS LOCATED WITH PART 6; 53-30-18 AND VERIFIED WITH PART 4; 53-30-07. / ACCOMPLISHED ALL EA 1-A53-10228 REV 1; INSP REPEAT REQUIRED; THRESHOLD 50;000 CYCLES AND REPEAT INSP. 4;500 CYCLES. ACCOMPLISHED ALL EA 1-A53-14845.LATEST REV. ACCOMPLISH ALL EA 1-A53-14846 LATEST REV. THRESHOLD 50;000 CYCLES AND 8;000 CYCLES. REPEAT SEE SA-M 326 ATTACHED #A1308452

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