Mooney M-20P pilot and passenger had near midair collision with a beech king air in bwi class B.

Attributes
ACN	566251
Time
Date	200211
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bwi.airport
State Reference	MD
Altitude	msl single value : 4500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : bwi.tracon
Operator	general aviation : personal
Make Model Name	M-20 Series Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	descent : approach descent : intermediate altitude
Flight Plan	None
Aircraft 2
Controlling Facilities	tracon : bwi.tracon
Operator	general aviation : corporate
Make Model Name	King Air 100 A/B
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : multi engine pilot : instrument
Experience	flight time last 90 days : 50 flight time total : 2500 flight time type : 900
ASRS Report	566251
Person 2
Affiliation	other
Function	observation : passenger
Events
Anomaly	conflict : nmac non adherence : far non adherence : published procedure non adherence : required legal separation
Independent Detector	other other : 2
Resolutory Action	flight crew : took evasive action none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Miss Distance	vertical : 75
Supplementary
Problem Areas	ATC Human Performance FAA
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error Intra Facility Coordination Failure

Narrative:

My friend screamed, pushed plane over. I looked and saw a twin engine plane miss us by ft. We were cleared into class B and had a squawk. When I called the controller, he said he didn't see anyone out there, ho, ho. The next guy said there had been a misunderstanding between 2 controllers. Callback conversation with reporter revealed the following information: pilot was flying a mooney M-20P aircraft. The near midair collision was with a beech king air. The passenger was also a pilot, and was going to pick up a beech baron. Pilot estimates the miss distance was less than 50 ft. The TRACON supervisor called the next day to say there was a problem with approach controller coordination.

Original NASA ASRS Text

Title: MOONEY M-20P PLT AND PAX HAD NMAC WITH A BEECH KING AIR IN BWI CLASS B.

Narrative: MY FRIEND SCREAMED, PUSHED PLANE OVER. I LOOKED AND SAW A TWIN ENG PLANE MISS US BY FT. WE WERE CLRED INTO CLASS B AND HAD A SQUAWK. WHEN I CALLED THE CTLR, HE SAID HE DIDN'T SEE ANYONE OUT THERE, HO, HO. THE NEXT GUY SAID THERE HAD BEEN A MISUNDERSTANDING BTWN 2 CTLRS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: PLT WAS FLYING A MOONEY M-20P ACFT. THE NMAC WAS WITH A BEECH KING AIR. THE PAX WAS ALSO A PLT, AND WAS GOING TO PICK UP A BEECH BARON. PLT ESTIMATES THE MISS DISTANCE WAS LESS THAN 50 FT. THE TRACON SUPVR CALLED THE NEXT DAY TO SAY THERE WAS A PROB WITH APCH CTLR COORD.

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.