<< >> NASA ASRS Report 546471, May 2002

While in cruise near har, at 12500 ft, pilot of a C210 observed a twin turboprop commuter descending and crossing above and in front of him.

Attributes
ACN	546471
Time
Date	200205
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : har.vortac
State Reference	PA
Altitude	msl single value : 12500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Cessna 210 Centurion / Turbo Centurion 210C, 210D
Operating Under FAR Part	Part 91
Navigation In Use	other vortac
Flight Phase	cruise : level
Route In Use	enroute : direct
Flight Plan	None
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Operating Under FAR Part	Part 121
Flight Phase	descent : intermediate altitude
Flight Plan	IFR
Person 1
Function	flight crew : single pilot oversight : pic
Qualification	pilot : multi engine pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi pilot : atp
Experience	flight time last 90 days : 25 flight time total : 24942.5 flight time type : 200
ASRS Report	546471
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	conflict : airborne less severe other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Miss Distance	horizontal : 4000 vertical : 500
Supplementary
Problem Areas	Flight Crew Human Performance Airspace Structure
Primary Problem	Flight Crew Human Performance

Narrative:

My airplane is a high wing and I was flying on a southwesterly heading in level cruise at 12500 ft. I was using a harrisburg capital city airport altimeter setting. A twin engine low wing commuter flashed across in front of me. He was 3/4 - 1 mi in front and 500-800 ft above and appeared to be in a high speed descent on a southerly heading. The approach angle put him in my blind area, behind and above my wing.

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Original NASA ASRS Text

Title: WHILE IN CRUISE NEAR HAR, AT 12500 FT, PLT OF A C210 OBSERVED A TWIN TURBOPROP COMMUTER DSNDING AND XING ABOVE AND IN FRONT OF HIM.

Narrative: MY AIRPLANE IS A HIGH WING AND I WAS FLYING ON A SOUTHWESTERLY HDG IN LEVEL CRUISE AT 12500 FT. I WAS USING A HARRISBURG CAPITAL CITY ARPT ALTIMETER SETTING. A TWIN ENG LOW WING COMMUTER FLASHED ACROSS IN FRONT OF ME. HE WAS 3/4 - 1 MI IN FRONT AND 500-800 FT ABOVE AND APPEARED TO BE IN A HIGH SPD DSCNT ON A SOUTHERLY HDG. THE APCH ANGLE PUT HIM IN MY BLIND AREA, BEHIND AND ABOVE MY WING.

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.