SDR DLL10010127

Service difficulty report · Duct · Lkheed 10113851

Difficulty date: January 24, 2001
Submitted: January 29, 2001
Operation: Air carrier
Aircraft: N735D
Make and model: Lkheed 10113851
Aircraft serial: 193C1226
Aircraft time: 58,461 hours, 26,515 cycles
System (JASC): 2120 · Air Distribution System
Part: Duct
Condition: Worn
Location: Nr 2 A/C Pack
Stage of operation: CR
How discovered: O
Nature of condition: G
Precautionary procedure: O

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

What was found

UNABLE TO HOLD CABIN AT 350 DESCENDED TO 280. COULD MAINTAIN CABIN WITH OUTFLOW VALVES CLOSED AND COOL AIR OVERBOARD SWC CLOSED. LATER HAD TO DESCEND TO 260 TO HOLD CABIN AT 7500. FOUND FWD CARGO DOOR UPPER CORNERS LEAKING DURING PRESSURE CK OF ACFT. REPLACED BOTH UPPER CORNERS OF SEAL. FOUND NR 1 PACK DUCT LEAK AT CLAMP. REPLACED CLAMP. FOUND NR 2 PACK DUCT CRACKED IN SEVERAL AREAS INOPED NR 2 PACK PRESS ACFT WITH PACKS 1 AND 3 CKS OK PER M/M. FWD CARGO DOOR UPPER SEALS LEAK CK OK.