SDR FDEA202103010518

Service difficulty report · Intercostal · Boeing 7572Y0

Difficulty date: March 1, 2021
Submitted: March 12, 2021
Operation: Air carrier
Aircraft: N973FD
Make and model: Boeing 7572Y0
Aircraft serial: 26151
Aircraft time: 52,360 hours, 23,692 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Intercostal
Condition: Corroded
Location: Fuselage
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

UPON REMOVAL SPLICE STRAP STA 1400 FOUND CORROSION ON INTERCOSTAL BETWEEN STA 1400 - 1420 LBL 19. REMOVED INTERCOSTAL AT AFT CARGO BETWEEN STA 1400 - 1420 LBL 19 IAW B 757 SRM 51- 40-02-OG.UPON EVALUATION FOUND CORROSION 100% MAT LOSS OUT OF LIMITS IAW B 757 SRM SRM 53-00-04-1A FIG 101 DETAIL I.FORMED,TRIMMED,LOCATED,DRILLED AND INSTALLED NEW INTERCOSTAL IAW BOEING DWG # 146N5427 REV : A AND B 757 SRM 51-40-02-OG.

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