A cpr CE550 flight crew detects smoke and an electrical odor in the cockpit and elects to return sat...

Attributes
ACN	484593
Time
Date	200009
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sat.airport
State Reference	TX
Altitude	msl single value : 21000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zhu.artcc
Operator	general aviation : corporate
Make Model Name	Citation II S2/Bravo
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : flight engineer pilot : instrument pilot : multi engine pilot : atp
Experience	flight time last 90 days : 80 flight time total : 2500 flight time type : 1500
ASRS Report	484593
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Qualification	pilot : atp pilot : cfi pilot : instrument pilot : multi engine
Experience	flight time last 90 days : 75 flight time total : 10000 flight time type : 1500
ASRS Report	484594
Events
Anomaly	aircraft equipment problem : less severe other anomaly
Independent Detector	other flight crewa other flight crewb
Resolutory Action	controller : provided flight assist flight crew : landed in emergency condition flight crew : diverted to another airport
Consequence	other other
Supplementary
Problem Areas	Aircraft Maintenance Human Performance
Primary Problem	Aircraft

Narrative:

Detected smell then visible smoke in cockpit. Removed electrical power (battery to emergency and generators off) and called for 'smoke in cockpit' checklist. Returned to sat. During return, experienced same difficulty communicating with ATC. (Telex headset did not work in 'emergency communication' but sigtronics did.) upon landing, determined that radar unit was the source of smoke. Would suggest a service bulletin on radar unit as manufacturer indicated that this was by no means an isolated incident.

Original NASA ASRS Text

Title: A CPR CE550 FLC DETECTS SMOKE AND AN ELECTRICAL ODOR IN THE COCKPIT AND ELECTS TO RETURN SAT.

Narrative: DETECTED SMELL THEN VISIBLE SMOKE IN COCKPIT. REMOVED ELECTRICAL PWR (BATTERY TO EMER AND GENERATORS OFF) AND CALLED FOR 'SMOKE IN COCKPIT' CHKLIST. RETURNED TO SAT. DURING RETURN, EXPERIENCED SAME DIFFICULTY COMMUNICATING WITH ATC. (TELEX HEADSET DID NOT WORK IN 'EMER COM' BUT SIGTRONICS DID.) UPON LNDG, DETERMINED THAT RADAR UNIT WAS THE SOURCE OF SMOKE. WOULD SUGGEST A SVC BULLETIN ON RADAR UNIT AS MANUFACTURER INDICATED THAT THIS WAS BY NO MEANS AN ISOLATED INCIDENT.

Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.