Mooney M20F has near midair collision in traffic pattern at bvi.

Attributes
ACN	715412
Time
Date	200611
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bvi.airport
State Reference	PA
Altitude	msl single value : 2400
Environment
Flight Conditions	VMC
Weather Elements	Turbulence
Light	Daylight
Aircraft 1
Controlling Facilities	tower : bvi.tower
Operator	general aviation : personal
Make Model Name	M-20 F Executive 21
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : bvi.tower
Operator	general aviation : personal
Make Model Name	Skyhawk 172/Cutlass 172
Operating Under FAR Part	Part 91
Flight Phase	climbout : initial
Flight Plan	None
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : private
Experience	flight time last 90 days : 40 flight time total : 2120 flight time type : 20
ASRS Report	715412
Person 2
Affiliation	other
Function	flight crew : single pilot
Events
Anomaly	conflict : nmac non adherence : required legal separation
Independent Detector	other flight crewa
Resolutory Action	controller : issued advisory flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 1 vertical : 100
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

After contacting pit approach; I established visual contact with the runway at bvi at approximately 8 NM from the field. I was then handed off to bvi tower at which time I executed a descent to 2300 ft MSL and turned on my landing light to make myself visible to the tower. I was cleared by the tower to enter a left downwind for runway 28 and to report midfield. Shortly thereafter; a C172 was cleared for takeoff and instructed to make left close traffic for runway 28. I was told by the tower to expect to be #2 for the airport behind the cessna. I looked but did not see the cessna take off. When I was approximately 2 NM wsw of the upwind numbers for runway 28 at 2400 ft MSL still descending to 2300 ft MSL; just prior to entering the downwind for runway 28; tower called the cessna at crosswind for runway 28. The cessna never called its position in the pattern. I looked to the 10-11 O'clock position; and noted the cessna at my altitude rapidly converging with my aircraft in a quartering to perpendicular manner. The cessna did not have its landing lights on. I immediately executed a 60-70 degree angle-of-bank turn to the right applying full right rudder to avoid a midair collision. I passed under the cessna. I then entered the downwind for runway 28 and landed. While taxiing I requested to meet with tower personnel.

Original NASA ASRS Text

Title: MOONEY M20F HAS NMAC IN TFC PATTERN AT BVI.

Narrative: AFTER CONTACTING PIT APCH; I ESTABLISHED VISUAL CONTACT WITH THE RWY AT BVI AT APPROX 8 NM FROM THE FIELD. I WAS THEN HANDED OFF TO BVI TWR AT WHICH TIME I EXECUTED A DSCNT TO 2300 FT MSL AND TURNED ON MY LNDG LIGHT TO MAKE MYSELF VISIBLE TO THE TWR. I WAS CLRED BY THE TWR TO ENTER A L DOWNWIND FOR RWY 28 AND TO RPT MIDFIELD. SHORTLY THEREAFTER; A C172 WAS CLRED FOR TKOF AND INSTRUCTED TO MAKE L CLOSE TFC FOR RWY 28. I WAS TOLD BY THE TWR TO EXPECT TO BE #2 FOR THE ARPT BEHIND THE CESSNA. I LOOKED BUT DID NOT SEE THE CESSNA TAKE OFF. WHEN I WAS APPROX 2 NM WSW OF THE UPWIND NUMBERS FOR RWY 28 AT 2400 FT MSL STILL DSNDING TO 2300 FT MSL; JUST PRIOR TO ENTERING THE DOWNWIND FOR RWY 28; TWR CALLED THE CESSNA AT XWIND FOR RWY 28. THE CESSNA NEVER CALLED ITS POS IN THE PATTERN. I LOOKED TO THE 10-11 O'CLOCK POS; AND NOTED THE CESSNA AT MY ALT RAPIDLY CONVERGING WITH MY ACFT IN A QUARTERING TO PERPENDICULAR MANNER. THE CESSNA DID NOT HAVE ITS LNDG LIGHTS ON. I IMMEDIATELY EXECUTED A 60-70 DEG ANGLE-OF-BANK TURN TO THE R APPLYING FULL R RUDDER TO AVOID A MIDAIR COLLISION. I PASSED UNDER THE CESSNA. I THEN ENTERED THE DOWNWIND FOR RWY 28 AND LANDED. WHILE TAXIING I REQUESTED TO MEET WITH TWR PERSONNEL.

Data retrieved from NASA's ASRS site as of January 2009 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.