SDR ABXA20260711316

Service difficulty report · Circuit Card · Boeing 7673P6

Difficulty date: July 11, 2026
Submitted: July 13, 2026
Operation: Air carrier
Aircraft: N764CK
Make and model: Boeing 7673P6
Aircraft serial: 26234
Aircraft time: 89,914 hours, 28,355 cycles
System (JASC): 2697 · Fire Protection System Wiring
Part: Circuit Card
Part number: 89873202
Part serial: 1102
Condition: Unknown
Location: Affolts
Part time: 3,617 hours, 2,032 cycles
Stage of operation: NR
How discovered: O
Nature of condition: J
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

L ENG FIRE LOOP 1 STATUS MESSAGE AC GROUNDED ,CONDUCTED T/S PER FIM 26-11 FT 804, CONTINUITY CHECK PASS. INTEGRITY RESISTANCE FROM AFOLTS CARD M681 PINS 20 & 21 14.1 OHM. PER BLOCK 102, SWAPPED M681 AND M682 AFOLTS CARDS, MESSAGE DID NOT RETURN. A/C VERIFIED NO ETOPS RETURNED AC TO SERVICE

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