An H25A crew, on descent to csm, experienced smoke fumes in the cockpit.

Attributes
ACN	544898
Time
Date	200204
Day	Fri
Local Time Of Day	0601 To 1200
Place
State Reference	OK
Altitude	msl bound lower : 0 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zfw.artcc tower : twf.tower
Operator	other
Make Model Name	Hawker Horizon (Raytheon)
Operating Under FAR Part	Part 91
Flight Phase	descent : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	government : military
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 30 flight time total : 4500 flight time type : 200
ASRS Report	544898
Person 2
Affiliation	government : military
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical other anomaly other anomaly
Independent Detector	aircraft equipment : gpws other flight crewa other flight crewb
Resolutory Action	aircraft : evacuated controller : provided flight assist flight crew : declared emergency flight crew : diverted to another airport flight crew : landed in emergency condition
Consequence	faa : reviewed incident with flight crew other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

During descent into clinton-sherman municipal, captain noticed arid smell then moderate smoke in cockpit. Donned oxygen masks/100% and initiated emergency descent with ZDV. Contacted clinton-sherman tower and landed visual runway 35L. Exited runway and emergency ground egress.

Original NASA ASRS Text

Title: AN H25A CREW, ON DSCNT TO CSM, EXPERIENCED SMOKE FUMES IN THE COCKPIT.

Narrative: DURING DSCNT INTO CLINTON-SHERMAN MUNI, CAPT NOTICED ARID SMELL THEN MODERATE SMOKE IN COCKPIT. DONNED OXYGEN MASKS/100% AND INITIATED EMER DSCNT WITH ZDV. CONTACTED CLINTON-SHERMAN TWR AND LANDED VISUAL RWY 35L. EXITED RWY AND EMER GND EGRESS.

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.