SDR SWAA2022031002630

Service difficulty report · Seal Ring · Boeing 7377K9

Difficulty date: May 31, 2019
Submitted: March 10, 2022
Operation: Air carrier
Aircraft: N7814B
Make and model: Boeing 7377K9
Aircraft serial: 30042
Aircraft time: 53,796 hours, 28,089 cycles
System (JASC): 5312 · Fuselage Main, Bulkhead
Part: Seal Ring
Condition: Corroded
Location: Aft Cargo Compt
Stage of operation: IN
How discovered: 9
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

AFT CARGO PIT STA 727 BULKHEAD LOWER SEAL RING FOR APU BLEED AIR TUBE HAS CORROSION ON EDGES LBL1-RBL2 / REMOVED CORROSION FOUND TO BE OUT OF LIMITS DUE TO NO DAMAGE ALLOWED IN THAT LOCATION IAW B737-700 SRM 53-40-08-1A-3 FIG 102. REMOVED LOCATED; DRILLED AND INSTALLED SEAL RING IAW BOEING DWG # 144A2600 REV C. APPLIED CAP SEAL FASTENERS COMMON TO THE SEAL RING IAW B737-700 AMM 51-31-00-390-801. APPLIED CIC IAW B737-700 AMM 51-21-91-620-802 P/N 144A2621-1

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