2 aircraft circling, 1 moves in very close as a formation flight.

Attributes
ACN	239809
Time
Date	199304
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : mzb airport : myf
State Reference	CA
Altitude	msl bound lower : 1000 msl bound upper : 1200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Flight Plan	None
Aircraft 2
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : atp pilot : flight engineer pilot : cfi pilot : commercial
Experience	flight time last 90 days : 250 flight time total : 21000 flight time type : 200
ASRS Report	293809
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : nmac non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 100
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

Aircraft 1 (small aircraft a) flew south along shoreline passing aircraft 2. Both aircraft at 1000-1200 ft MSL below TCA (1500 ft). Aircraft small aircraft a turned left behind aircraft 2, an unknown small aircraft B. Aircraft small aircraft a, flew in circles behind aircraft small aircraft B, at approximately 2000-3000 ft. Both aircraft were circling and viewing ground and flight activity at torrey pines glider port. As lead aircraft (small aircraft B) varied speed and direction, small aircraft a aircraft varied speed and direction also to maintain distance and keep in view. When small aircraft a aircraft turned left and descended away from circling pattern to leave area, small aircraft B aircraft, unidented small aircraft B, dove on small aircraft a aircraft and closed into formation off small aircraft a aircraft right wing. Small aircraft a aircraft made sharp left turn away from small aircraft B to break out of formation and avoid small aircraft B. Small aircraft a then trailed small aircraft B to airport. Small aircraft B aircraft was heard complaining to tower about small aircraft a aircraft's maneuver away from him. No further conflict occurred.

Original NASA ASRS Text

Title: 2 ACFT CIRCLING, 1 MOVES IN VERY CLOSE AS A FORMATION FLT.

Narrative: ACFT 1 (SMA A) FLEW S ALONG SHORELINE PASSING ACFT 2. BOTH ACFT AT 1000-1200 FT MSL BELOW TCA (1500 FT). ACFT SMA A TURNED L BEHIND ACFT 2, AN UNKNOWN SMA B. ACFT SMA A, FLEW IN CIRCLES BEHIND ACFT SMA B, AT APPROX 2000-3000 FT. BOTH ACFT WERE CIRCLING AND VIEWING GND AND FLT ACTIVITY AT TORREY PINES GLIDER PORT. AS LEAD ACFT (SMA B) VARIED SPD AND DIRECTION, SMA A ACFT VARIED SPD AND DIRECTION ALSO TO MAINTAIN DISTANCE AND KEEP IN VIEW. WHEN SMA A ACFT TURNED L AND DSNDED AWAY FROM CIRCLING PATTERN TO LEAVE AREA, SMA B ACFT, UNIDENTED SMA B, DOVE ON SMA A ACFT AND CLOSED INTO FORMATION OFF SMA A ACFT R WING. SMA A ACFT MADE SHARP L TURN AWAY FROM SMA B TO BREAK OUT OF FORMATION AND AVOID SMA B. SMA A THEN TRAILED SMA B TO ARPT. SMA B ACFT WAS HEARD COMPLAINING TO TWR ABOUT SMA A ACFT'S MANEUVER AWAY FROM HIM. NO FURTHER CONFLICT OCCURRED.

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.