SDR FDEA201301040012

Service difficulty report · Relay · Doug MD1010F

Difficulty date: January 4, 2013
Submitted: January 4, 2013
Operation: Air carrier
Aircraft: N392FE
Make and model: Doug MD1010F
Aircraft serial: 46626
Aircraft time: 82,949 hours, 31,807 cycles
System (JASC): 3620 · Pneumatic Indicating System
Part: Relay
Part number: TD1239
Condition: Intermittent
Location: Manifold
Stage of operation: AP
How discovered: O
Nature of condition: J
Precautionary procedure: B

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

What was found

AIR MANIFOLD NR 3 FAILED LEVEL 3 ALERT WHEN ANTI-ICE SELECTED ON DURING DESCENT. PERFORMED TEST OF THE PNEUMATIC PRESSURE SW IAW EA 8-3622-114705, SWITCH OPS NORMAL, BUR FOUND FAILED. RELAY R2-5257 INTERMITTENT, REPLACED RELAY AND PERFORMED TESTS IAW FIM 36-23 AND NR 3 PNEU. SYS OPS NORMAL.

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