Near midair collision.

Attributes
ACN	208880
Time
Date	199204
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : pvu
State Reference	UT
Altitude	agl bound lower : 900 agl bound upper : 900
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	cruise other other
Route In Use	approach : visual
Flight Plan	None
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	None
Person 1
Affiliation	company : air carrier
Function	instruction : instructor other personnel other
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 20 flight time total : 9230 flight time type : 50
ASRS Report	208880
Person 2
Affiliation	company : air carrier
Function	flight crew : captain instruction : trainee
Qualification	pilot : atp
Events
Anomaly	conflict : nmac non adherence : published procedure non adherence : far other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 0 vertical : 50
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While on left downwind for runway 13 at provo, an unidentified high wing small aircraft came at us virtually head-on. I was kneeling between the 2 pilots observing a flight check when I noticed the small aircraft at 12 O'clock to us. I simultaneously yelled 'duck' and reached up and pushed the control column down to descend. The 2 pilots I was observing were busy working a checklist and didn't see anything until I yelled. The other aircraft was transiting the area and was in the wrong place unaware (I think) of the traffic or airport. 2 things I think need to be done: install a VFR tower at the airport and make a far change to make traffic patterns at uncontrolled airports mandatory instead of recommended.

Original NASA ASRS Text

Title: NMAC.

Narrative: WHILE ON L DOWNWIND FOR RWY 13 AT PROVO, AN UNIDENTIFIED HIGH WING SMA CAME AT US VIRTUALLY HEAD-ON. I WAS KNEELING BTWN THE 2 PLTS OBSERVING A FLT CHK WHEN I NOTICED THE SMA AT 12 O'CLOCK TO US. I SIMULTANEOUSLY YELLED 'DUCK' AND REACHED UP AND PUSHED THE CTL COLUMN DOWN TO DSND. THE 2 PLTS I WAS OBSERVING WERE BUSY WORKING A CHKLIST AND DIDN'T SEE ANYTHING UNTIL I YELLED. THE OTHER ACFT WAS TRANSITING THE AREA AND WAS IN THE WRONG PLACE UNAWARE (I THINK) OF THE TFC OR ARPT. 2 THINGS I THINK NEED TO BE DONE: INSTALL A VFR TWR AT THE ARPT AND MAKE A FAR CHANGE TO MAKE TFC PATTERNS AT UNCTLED ARPTS MANDATORY INSTEAD OF RECOMMENDED.

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.