C152 on short final alerts sdl of conflicting C172 on base, and takes evasive action.

Attributes
ACN	510053
Time
Date	200105
Day	Wed
Place
Locale Reference	airport : sdl.airport
State Reference	AZ
Altitude	msl single value : 1700
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : sdl.tower
Operator	general aviation : corporate
Make Model Name	Cessna 152
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : visual approach : straight in
Flight Plan	None
Aircraft 2
Controlling Facilities	tower : sdl.tower
Operator	general aviation : personal
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : traffic pattern approach : visual
Person 1
Affiliation	other
Function	instruction : instructor
Qualification	pilot : commercial pilot : multi engine pilot : instrument pilot : atp pilot : cfi
Experience	flight time last 90 days : 200 flight time total : 4000 flight time type : 3000
ASRS Report	510053
Person 2
Affiliation	other
Function	instruction : trainee
Events
Anomaly	conflict : nmac non adherence : published procedure
Independent Detector	other flight crewa
Miss Distance	horizontal : 300 vertical : 100
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	ATC Human Performance

Narrative:

Aircraft X was on a straight-in for runway 21. Other aircraft (C172) was on a right base runway 21. We were following another aircraft on short final. The C172 was not given a sequence and did not know we were on final until I told the tower that we were on a '2 mi final, traffic our 6 O'clock position in sight.' C172 slowed down, we sped up.

Original NASA ASRS Text

Title: C152 ON SHORT FINAL ALERTS SDL OF CONFLICTING C172 ON BASE, AND TAKES EVASIVE ACTION.

Narrative: ACFT X WAS ON A STRAIGHT-IN FOR RWY 21. OTHER ACFT (C172) WAS ON A R BASE RWY 21. WE WERE FOLLOWING ANOTHER ACFT ON SHORT FINAL. THE C172 WAS NOT GIVEN A SEQUENCE AND DID NOT KNOW WE WERE ON FINAL UNTIL I TOLD THE TWR THAT WE WERE ON A '2 MI FINAL, TFC OUR 6 O'CLOCK POS IN SIGHT.' C172 SLOWED DOWN, WE SPED UP.

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.