Near midair collision between 2 flight training light twins simulating IFR near prc.

Attributes
ACN	153723
Time
Date	199008
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : prc
State Reference	AZ
Altitude	msl bound lower : 7000 msl bound upper : 7000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : prc
Operator	common carrier : air taxi
Make Model Name	Small Aircraft, Low Wing, 2 Eng, Retractable Gear
Flight Phase	descent : approach
Flight Plan	None
Aircraft 2
Make Model Name	Small Aircraft, Low Wing, 2 Eng, Retractable Gear
Flight Phase	descent : approach
Route In Use	approach : visual
Person 1
Affiliation	Other
Function	instruction : trainee
Qualification	pilot : private
Experience	flight time last 90 days : 30 flight time total : 220 flight time type : 25
ASRS Report	153723
Person 2
Affiliation	company : air taxi
Function	instruction : instructor oversight : pic
Qualification	pilot : commercial pilot : instrument pilot : cfi
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 100 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

We were cleared for ILS approach to runway 21 by prc tower. Small aircraft Y was simulating radar vectors to ILS final approach course. Prc tower instructed them to remain east of the localizer. The safety pilot was looking for traffic to the east when the traffic (small aircraft Y) crossed from west to east 100' below and 100' ahead of us. They passed beneath us. If prc tower had radar coverage, this may have been prevented.

Original NASA ASRS Text

Title: NMAC BETWEEN 2 FLT TRAINING LIGHT TWINS SIMULATING IFR NEAR PRC.

Narrative: WE WERE CLRED FOR ILS APCH TO RWY 21 BY PRC TWR. SMA Y WAS SIMULATING RADAR VECTORS TO ILS FINAL APCH COURSE. PRC TWR INSTRUCTED THEM TO REMAIN E OF THE LOC. THE SAFETY PLT WAS LOOKING FOR TFC TO THE E WHEN THE TFC (SMA Y) CROSSED FROM W TO E 100' BELOW AND 100' AHEAD OF US. THEY PASSED BENEATH US. IF PRC TWR HAD RADAR COVERAGE, THIS MAY HAVE BEEN PREVENTED.

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.