Service difficulty report · Stringer · Boeing 7879

Difficulty date
May 6, 2025
Submitted
May 7, 2025
Operation
Air carrier
Aircraft
N24974
Make and model
Boeing 7879
Aircraft serial
40942
Aircraft time
34,054 hours, 3,228 cycles
Part
Stringer
Condition
Damaged
Location
Zone 100
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

FOUND LIGHTNING STRIKE DAMAGE AT STA-128 APROX 24" ABOVE STRINGER S-32R REF ORIGINAL LP 4703406DIMENTIONS ARE 2" WIDE 2.2" HIGH MAKE A TEMPORARY SEAL WITH ALUMINUM TAPE INSPECT THE TAPE EACH 400 FLIGHT CYCLES AND PERMANENT SEAL THE DAMMAGE WITH SEALINF RESIN AT OR BEFORE 4,000 FLIGHT SYCLES. DISREGARD LAST UPDATE, WILL REQUIRE REPAIR. PERFORMED AVO 14711 STEPS1, 2, 3, 4, 5 AND 7 AT LIGHTING STRIKE DAMAGE APPROX. STA. 128 AND STRINGER 32 R. VERIFIED RII ON AVO 14711 STEPS1, 2, 3, 4, 5 AND 7 AT LIGHTING STRIKE DAMAGE APPROX. STA. 128 AND STRINGER 32 R, OK TO CONTINUE. CW AVO14711 STEP 10, NO DEFECTS NOTED. CW AVO 14711 STEP 11, OPEN HOLE EDDY CURRENT, NO DEFECTS NOTED PER PART 6 51-00-06. OK TO CONTINUE. REF AVO 14711 STEP 12, CW PART 4 51-00-06, GRID UPLOADED. C/W STEP 13 OF AVO14711, PERFORMED DOLPHICAM USI AND A-SCAN USI OF DAMAGED AREA PER B787 NDT PART 4-51-00-22 AND B787 PART 4-51-00-06 WITH NO DELAMINATION NOTED, GRID PATTERN WITH REMAINING THICKNESS AFTER SANDING PREVIOUSLY SUBMITTED. PERFORMED STEPS 6. DETAIL VISUAL AND TAP TEST OF AFFECTED AREAS. 8. DETAIL VISUAL OF ALL REMOVED FASTENERS, AND STEP 9. ENSURING ALL SEALANT REMOVAL. ON THE OML NO MORE THAN 2 PLIES NOTED, ON THE IML NO DISCOLORATION OR SOOT NOTED.

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