Small transport crew on equipment test flight has near midair collision.

Attributes
ACN	173457
Time
Date	199103
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mtv
State Reference	VA
Altitude	msl bound lower : 10200 msl bound upper : 10200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sfo
Operator	general aviation : personal
Make Model Name	Small Transport
Flight Phase	climbout : intermediate altitude cruise other
Flight Plan	None
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private pilot : instrument pilot : commercial
Experience	flight time last 90 days : 30 flight time total : 4000 flight time type : 500
ASRS Report	173457
Person 2
Affiliation	Other
Function	other personnel other
Qualification	other other : other
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 50 vertical : 400
Supplementary
Primary Problem	Ambiguous

Narrative:

Aircraft #1 was being climbed while autoplt was being adjusted. Tech and copilot were engaged in adjustment process. Pilot was on watch, watching for other aircraft. Aircraft #2 (jet) approached from 1 O'clock to 1:30 (relative bearing). Initial sighting was approximately frontal view of #2. Initial sighting of #2 by #1 was estimated at 3000' distance and evasive action was immediate. Evasive action by #1 was immediate, hard descending turn. #2 aircraft appeared to take evasive action by initiating climb. Approach angle and closing speed were primary factors. Aircraft #1 was on approximately a north heading. Wing tip strobes, dual rotating beacons and belly strobe were on and functioning. #1 aircraft is mode C equipped and was squawking 1200 mode C. Judgement and decisions made were appropriate to the situation. Actions taken by both aircraft were appropriate and the quality of human performance by both pilots was excellent.

Original NASA ASRS Text

Title: SMT CREW ON EQUIPMENT TEST FLT HAS NMAC.

Narrative: ACFT #1 WAS BEING CLBED WHILE AUTOPLT WAS BEING ADJUSTED. TECH AND COPLT WERE ENGAGED IN ADJUSTMENT PROCESS. PLT WAS ON WATCH, WATCHING FOR OTHER ACFT. ACFT #2 (JET) APCHED FROM 1 O'CLOCK TO 1:30 (RELATIVE BEARING). INITIAL SIGHTING WAS APPROX FRONTAL VIEW OF #2. INITIAL SIGHTING OF #2 BY #1 WAS ESTIMATED AT 3000' DISTANCE AND EVASIVE ACTION WAS IMMEDIATE. EVASIVE ACTION BY #1 WAS IMMEDIATE, HARD DSNDING TURN. #2 ACFT APPEARED TO TAKE EVASIVE ACTION BY INITIATING CLB. APCH ANGLE AND CLOSING SPD WERE PRIMARY FACTORS. ACFT #1 WAS ON APPROX A N HDG. WING TIP STROBES, DUAL ROTATING BEACONS AND BELLY STROBE WERE ON AND FUNCTIONING. #1 ACFT IS MODE C EQUIPPED AND WAS SQUAWKING 1200 MODE C. JUDGEMENT AND DECISIONS MADE WERE APPROPRIATE TO THE SITUATION. ACTIONS TAKEN BY BOTH ACFT WERE APPROPRIATE AND THE QUALITY OF HUMAN PERFORMANCE BY BOTH PLTS WAS EXCELLENT.

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.