Near midair collision of 2 small aircraft's in traffic pattern.

Attributes
ACN	300870
Time
Date	199504
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : szp
State Reference	CA
Altitude	msl bound lower : 1200 msl bound upper : 1200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : lax
Operator	general aviation : personal
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	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 18 flight time total : 202 flight time type : 15
ASRS Report	300870
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : nmac other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	Other
Miss Distance	vertical : 300
Supplementary
Primary Problem	Ambiguous

Narrative:

Active runway 22, 2500 ft long, left traffic, mountains 1 mi south of airport rising to over 4000 ft, traffic pattern altitude 800 ft (about 600 ft AGL), 5 to 6 other aircraft in pattern. First time flown to this airport. 'Go around' following unsatisfactory sideways drift off runway shortly before touchdown. Reached altitude of 1200 ft MSL in crosswind leg and turned crosswind to downwind leg about 1/2 mi from mountains and commenced descent back down to tpa on completion of turn. 'Near miss' must have occurred either during the turn from crosswind to downwind or shortly after. Did not see the other aircraft then nor hear a radio call. Only hint that a near miss might have occurred at the time was seeing other aircraft (cessna 172) out of corner of my eye to the right just as I turned base. Other aircraft followed me to land shortly after. Do not recall hearing any radio call from that aircraft anytime in the pattern - would have been obvious as it was only cessna in pattern at the time. Only learned of near miss after landing from eye witness on ground and threats of physical violence from other pilot. Lessons learned: beware of high wing aircraft below low wing aircraft. Extra vigilance in busy non-controled airport. Balance attention between flying aircraft, watching for traffic and terrain avoidance.

Original NASA ASRS Text

Title: NMAC OF 2 SMA'S IN TFC PATTERN.

Narrative: ACTIVE RWY 22, 2500 FT LONG, L TFC, MOUNTAINS 1 MI S OF ARPT RISING TO OVER 4000 FT, TFC PATTERN ALT 800 FT (ABOUT 600 FT AGL), 5 TO 6 OTHER ACFT IN PATTERN. FIRST TIME FLOWN TO THIS ARPT. 'GAR' FOLLOWING UNSATISFACTORY SIDEWAYS DRIFT OFF RWY SHORTLY BEFORE TOUCHDOWN. REACHED ALT OF 1200 FT MSL IN XWIND LEG AND TURNED XWIND TO DOWNWIND LEG ABOUT 1/2 MI FROM MOUNTAINS AND COMMENCED DSCNT BACK DOWN TO TPA ON COMPLETION OF TURN. 'NEAR MISS' MUST HAVE OCCURRED EITHER DURING THE TURN FROM XWIND TO DOWNWIND OR SHORTLY AFTER. DID NOT SEE THE OTHER ACFT THEN NOR HEAR A RADIO CALL. ONLY HINT THAT A NEAR MISS MIGHT HAVE OCCURRED AT THE TIME WAS SEEING OTHER ACFT (CESSNA 172) OUT OF CORNER OF MY EYE TO THE R JUST AS I TURNED BASE. OTHER ACFT FOLLOWED ME TO LAND SHORTLY AFTER. DO NOT RECALL HEARING ANY RADIO CALL FROM THAT ACFT ANYTIME IN THE PATTERN - WOULD HAVE BEEN OBVIOUS AS IT WAS ONLY CESSNA IN PATTERN AT THE TIME. ONLY LEARNED OF NEAR MISS AFTER LNDG FROM EYE WITNESS ON GND AND THREATS OF PHYSICAL VIOLENCE FROM OTHER PLT. LESSONS LEARNED: BEWARE OF HIGH WING ACFT BELOW LOW WING ACFT. EXTRA VIGILANCE IN BUSY NON-CTLED ARPT. BALANCE ATTN BTWN FLYING ACFT, WATCHING FOR TFC AND TERRAIN AVOIDANCE.

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.