SDR DXTA2010110204285

Service difficulty report · Acm · Cessna 750

Difficulty date: November 1, 2010
Submitted: November 2, 2010
Operation: Air carrier
Aircraft: N920QS
Make and model: Cessna 750
Aircraft serial: 7500120
Aircraft time: 9,920 hours, 6,039 cycles
Engine: Rroyce AE3007C1
System (JASC): 2161 · Cabin Temperature Controller
Part: Acm
Condition: Failed
Location: Cockpit
Stage of operation: DE
How discovered: O
Nature of condition: B
Precautionary procedure: O

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

What was found

ON INITIAL DESCENT, CREW & PAX NOTICED STRONG, PUNGENT ODOR (LIKE A STRUCK MATCH). ON REACHING A LOWER ALTITUDE, ISOLATED EACH PACK AND FOUND THE COCKPIT PACK TEMPERATURE TO BE UNCONTROLABLE IN AUTO & MANUAL. REMOVED AND INSTALLED COCKPIT ACM IAW MM 21-51-00. OPS CHECKED GOOD.

More about the Cessna 750