Service difficulty report · Skin · Boeing 777224

Difficulty date
November 5, 2019
Submitted
November 11, 2019
Operation
Air carrier
Aircraft
N78008
Make and model
Boeing 777224
Aircraft serial
29478
Aircraft time
101,035 hours, 10,036 cycles
Part
Skin
Part number
141W23057
Condition
Cracked
Location
Bs 508
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

REF LP 3522239 LIGHTNING STRIKE DEFERRED PER OPERATIONAL LIMITS WILL NEED SRM REPAIR INSTALLED HFEC PERFORMED REF STEP B (2) PERFORMED STEPS A,B AND C OF SRM 53-00-01 REPAIR 4 PARA 4, NEED INSPECTED AREA PER SRM 53-00-01 REPAIR 4 PARA 4 STEPS A, B,C. HFEC C/W PER NDT 6-51-00-01. NO CRACKS FOUND. STA. 508 STR 46R. 2024-T3 CLAD PO# 9944459 REF SRM 53-00-01 REPAIR 4 NEED TO VERIFY REPAIR DOUBLER AND FILLER MATERIAL AS 0.100" 53-00-01 REPAIR 4. VERIFIED MATERIAL AS 0.100 " 2024-T3 CLAD . PO: 9944459. SRM REPAIR 4 STEP 4.F.(1) AND SRM 51-10-02. ZERO-TIMED EXISTING HOLES IN CRITICAL ROW REF. SRM 53-00-01 REF. SRM 53-00-01 REPAIR 4.F.(1) AND SRM 51-10-02. PERFORMED OPEN FASTENER HOLE HFEC OF EXISTING HOLES IN THE CRITICAL ROW PER 777 NDT MANUAL PART 6 51-00-02 PROCEDURE 3. COMPLIED W STEPS D,E, F, AND G OF SRM 53-00-01 REPAIR 4 PARA 4. C/W STEP 4H OF REPAIR 4 SRM 53-00-01. NEED OK TO TREAT AND PRIME REPAIR PARTS. T AND PRIME REPAIR PARTS.. VERIFIED C/W SRM 53-00-01 REPAIR 4, STEPS 4.D THRU H. OK TO TREA DOES NOT APPLY TO THIS REPAIR PER FIG. 204 REPAIR DOUBLER THICKNESS & FASTENER SIZE ELIMINATES PRODUCTION COUNTERSINKS. COMPLIED WITH STEPS 4 I & J PER SRM 53-00-01 REPAIR 4. STEP 4K PRODUCTION COUNTERSINKS. REF: REPAIR FIG. 204. OK TO INSTALL PARTS. VERIFIED C/W STEPS 4.I & J. OF SRM 53-00-01 REPAIR 4. STEP 4.K DOES NOT APPLY TO THIS REPAIR. OVERSIZE FASTENER ELIMINATES COMPLIED WITH STEPS 4. L, M, N, & O PER SRM 53-00-01 REPAIR 4. REPAIR 4. VERIFIED COMPLIANCE WIT