Close proximity 2 GA small aircraft's in air traffic area at tus.

Attributes
ACN	177563
Time
Date	199105
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : tus
State Reference	AZ
Altitude	msl bound lower : 3400 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tower : tus
Operator	general aviation : instructional
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	descent other landing other
Flight Plan	VFR
Aircraft 2
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	climbout : takeoff climbout : intermediate altitude
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 200 flight time total : 2500
ASRS Report	177563
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	conflict : nmac non adherence : clearance other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 500 vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Our aircraft lost communications for 7 mins due to error in cockpit. Prior to that occurrence we were cleared to land runway 29L and were descending to 3400' tpa from 4000' when we encountered another aircraft (small aircraft Y in close proximity). We maneuvered to avoid and landed west/O incident. Upon landing we learned of tus tower's attempt to contact us. They said we were held at 4000', but when we were cleared to land by the tower we descended to 3400' in order to follow normal pattern procedure. The close call in the pattern was avoidable, if the aircraft had not taken off till we were clear of their climb path.

Original NASA ASRS Text

Title: CLOSE PROX 2 GA SMA'S IN ATA AT TUS.

Narrative: OUR ACFT LOST COMS FOR 7 MINS DUE TO ERROR IN COCKPIT. PRIOR TO THAT OCCURRENCE WE WERE CLRED TO LAND RWY 29L AND WERE DSNDING TO 3400' TPA FROM 4000' WHEN WE ENCOUNTERED ANOTHER ACFT (SMA Y IN CLOSE PROX). WE MANEUVERED TO AVOID AND LANDED W/O INCIDENT. UPON LNDG WE LEARNED OF TUS TWR'S ATTEMPT TO CONTACT US. THEY SAID WE WERE HELD AT 4000', BUT WHEN WE WERE CLRED TO LAND BY THE TWR WE DSNDED TO 3400' IN ORDER TO FOLLOW NORMAL PATTERN PROC. THE CLOSE CALL IN THE PATTERN WAS AVOIDABLE, IF THE ACFT HAD NOT TAKEN OFF TILL WE WERE CLR OF THEIR CLB PATH.

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.