Small aircraft X had near midair collision with aircraft Y in traffic pattern. See and avoid concept...

Attributes
ACN	295837
Time
Date	199502
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : prc
State Reference	AZ
Altitude	msl bound lower : 6000 msl bound upper : 6000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : prc
Operator	general aviation : instructional
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	other
Flight Plan	VFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : cfi
Experience	flight time last 90 days : 50 flight time total : 320 flight time type : 250
ASRS Report	295837
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : student
Events
Anomaly	conflict : nmac non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	other
Consequence	Other
Miss Distance	horizontal : 0 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Tower instructed X (my student & I) to report a 2 mi left 45 degrees for runway 3L. I had the student (under the hood at the time) turn to a heading that would establish us on a 45 degree entry for midfield. This placed us further south than we would have been if the 45 degrees was aligned with the midpoint of the assigned runway (3L). After speaking to tower, they indicated that this caused them to not see X where they 'expected' X to be. At 2 mi, they told me to follow traffic, but I don't remember its position at the time but I assumed it was on the pattern. I scanned outside and reported traffic not in sight. The tower gave no further instructions so I conformed and entered the downwind for runway 3L. I continued, since I assumed they would separate me from that other aircraft. I never did see the other aircraft throughout the incident. Once established on downwind I continued looking for the traffic ahead of me (I again assumed it was ahead - not behind). It was then that tower contacted the other aircraft about my position saying X was 'ahead and to your right.' then the pilot indicated I was right above them and tower advised me of this. I only saw their shadow and started to turn but tower then said traffic was no factor since Y turned base for runway 3L. I was instructed to extend downwind for runway 3R. After speaking with the other pilot, he indicated that he thought the tower had X insight and would separate us. I assumed the same thing. Another factor, besides tower's instructions or lack thereof, was that I was behind the airplane and my student, being an inexperienced cfii with only 5 hours dual given, it was poor judgement to leave the student under the hood for so long. I actually forgot that he was under the hood, but I was looking/scanning outside the airplane the entire time. At no time did I feel we were in violation of any far's. In retrospect, I should have had the student fly visually and so would have reduced my workload. But why did tower allow me to continue and enter the pattern when I did not have traffic in sight and I think the other traffic and tower did not have me in sight either?

Original NASA ASRS Text

Title: SMA X HAD NMAC WITH ACFT Y IN TFC PATTERN. SEE AND AVOID CONCEPT.

Narrative: TWR INSTRUCTED X (MY STUDENT & I) TO RPT A 2 MI L 45 DEGS FOR RWY 3L. I HAD THE STUDENT (UNDER THE HOOD AT THE TIME) TURN TO A HDG THAT WOULD ESTABLISH US ON A 45 DEG ENTRY FOR MIDFIELD. THIS PLACED US FURTHER S THAN WE WOULD HAVE BEEN IF THE 45 DEGS WAS ALIGNED WITH THE MIDPOINT OF THE ASSIGNED RWY (3L). AFTER SPEAKING TO TWR, THEY INDICATED THAT THIS CAUSED THEM TO NOT SEE X WHERE THEY 'EXPECTED' X TO BE. AT 2 MI, THEY TOLD ME TO FOLLOW TFC, BUT I DON'T REMEMBER ITS POS AT THE TIME BUT I ASSUMED IT WAS ON THE PATTERN. I SCANNED OUTSIDE AND RPTED TFC NOT IN SIGHT. THE TWR GAVE NO FURTHER INSTRUCTIONS SO I CONFORMED AND ENTERED THE DOWNWIND FOR RWY 3L. I CONTINUED, SINCE I ASSUMED THEY WOULD SEPARATE ME FROM THAT OTHER ACFT. I NEVER DID SEE THE OTHER ACFT THROUGHOUT THE INCIDENT. ONCE ESTABLISHED ON DOWNWIND I CONTINUED LOOKING FOR THE TFC AHEAD OF ME (I AGAIN ASSUMED IT WAS AHEAD - NOT BEHIND). IT WAS THEN THAT TWR CONTACTED THE OTHER ACFT ABOUT MY POS SAYING X WAS 'AHEAD AND TO YOUR R.' THEN THE PLT INDICATED I WAS RIGHT ABOVE THEM AND TWR ADVISED ME OF THIS. I ONLY SAW THEIR SHADOW AND STARTED TO TURN BUT TWR THEN SAID TFC WAS NO FACTOR SINCE Y TURNED BASE FOR RWY 3L. I WAS INSTRUCTED TO EXTEND DOWNWIND FOR RWY 3R. AFTER SPEAKING WITH THE OTHER PLT, HE INDICATED THAT HE THOUGHT THE TWR HAD X INSIGHT AND WOULD SEPARATE US. I ASSUMED THE SAME THING. ANOTHER FACTOR, BESIDES TWR'S INSTRUCTIONS OR LACK THEREOF, WAS THAT I WAS BEHIND THE AIRPLANE AND MY STUDENT, BEING AN INEXPERIENCED CFII WITH ONLY 5 HRS DUAL GIVEN, IT WAS POOR JUDGEMENT TO LEAVE THE STUDENT UNDER THE HOOD FOR SO LONG. I ACTUALLY FORGOT THAT HE WAS UNDER THE HOOD, BUT I WAS LOOKING/SCANNING OUTSIDE THE AIRPLANE THE ENTIRE TIME. AT NO TIME DID I FEEL WE WERE IN VIOLATION OF ANY FAR'S. IN RETROSPECT, I SHOULD HAVE HAD THE STUDENT FLY VISUALLY AND SO WOULD HAVE REDUCED MY WORKLOAD. BUT WHY DID TWR ALLOW ME TO CONTINUE AND ENTER THE PATTERN WHEN I DID NOT HAVE TFC IN SIGHT AND I THINK THE OTHER TFC AND TWR DID NOT HAVE ME IN SIGHT EITHER?

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.