Near midair collision between opposite direction traffic.

Attributes
ACN	244028
Time
Date	199306
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : mrb
State Reference	WV
Altitude	msl bound lower : 11000 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : iad
Operator	general aviation : corporate
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Route In Use	arrival other arrival star : star
Flight Plan	IFR
Aircraft 2
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : direct
Flight Plan	None
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 150 flight time total : 19000 flight time type : 150
ASRS Report	244028
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : less severe conflict : nmac non adherence : far
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Miss Distance	horizontal : 200 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

En route via westminster 2 arrival to bwi between mrb and ruane intersection at 11000 ft, small transport Y traffic passed under nose and left wing climbing wbound. I called dulles approach control. Reply, no target, small transport Y. Then called in on same frequency requesting IFR clearance. Approach then replied there's your target. I talked to the captain by phone at a later date to see if he had seen us. The small transport Y crew had seen us and stated there was no time for evasive action. He also stated his transponder was on squawk 1200. They elected to depart fdk VFR because they were unable to receive IFR clearance right away on ground. They had 10 people on board, air conditioning was inoperative.

Original NASA ASRS Text

Title: NMAC BTWN OPPOSITE DIRECTION TFC.

Narrative: ENRTE VIA WESTMINSTER 2 ARR TO BWI BTWN MRB AND RUANE INTXN AT 11000 FT, SMT Y TFC PASSED UNDER NOSE AND L WING CLBING WBOUND. I CALLED DULLES APCH CTL. REPLY, NO TARGET, SMT Y. THEN CALLED IN ON SAME FREQ REQUESTING IFR CLRNC. APCH THEN REPLIED THERE'S YOUR TARGET. I TALKED TO THE CAPT BY PHONE AT A LATER DATE TO SEE IF HE HAD SEEN US. THE SMT Y CREW HAD SEEN US AND STATED THERE WAS NO TIME FOR EVASIVE ACTION. HE ALSO STATED HIS XPONDER WAS ON SQUAWK 1200. THEY ELECTED TO DEPART FDK VFR BECAUSE THEY WERE UNABLE TO RECEIVE IFR CLRNC RIGHT AWAY ON GND. THEY HAD 10 PEOPLE ON BOARD, AIR CONDITIONING WAS INOPERATIVE.

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.