BE30 taxiing to parking at dtw experiences near collision with other aircraft.

Attributes
ACN	602523
Time
Date	200312
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : dtw.airport
State Reference	MI
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	general aviation : corporate
Make Model Name	Super King Air 300
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	ground : taxi
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : dtw.tower
Operator	general aviation : corporate
Make Model Name	Gulfstream 200 [G200] (IAI 1126 Galaxy)
Operating Under FAR Part	Part 91
Flight Phase	ground : taxi
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time total : 12500
ASRS Report	602523
Person 2
Affiliation	company : corporate
Function	flight crew : first officer
Events
Anomaly	conflict : ground critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	ATC Human Performance
Air Traffic Incident	Intra Facility Coordination Failure

Narrative:

After crossing the airport at night our aircraft was cleared to our ramp area after crossing runway 21L via taxiway S5. While still on S5 and approaching S4 my first officer exclaimed that an aircraft was rapidly approaching the intersecting txwys at the same time. The txwys coverage at an angle, so we did not see the aircraft until the very last. We were surprised because ground control never informed us that another aircraft was in the vicinity, and we never heard the aircraft on ground control. It appeared out of nowhere at night. We added speed quickly and we saw the galaxy apply brakes -- or a collision would have occurred. It became clear that both aircraft were on 2 different frequencys and that both were cleared into the ramp areas. Contributing factors were nighttime, and a breakdown of ATC procedures in the taxiway system leading to the ramp area on the east side of dtw. To prevent a close call like this in the future would be to keep your head on a swivel at night even when you believe you are the only aircraft operating in the area.

Original NASA ASRS Text

Title: BE30 TAXIING TO PARKING AT DTW EXPERIENCES NEAR COLLISION WITH OTHER ACFT.

Narrative: AFTER XING THE ARPT AT NIGHT OUR ACFT WAS CLRED TO OUR RAMP AREA AFTER XING RWY 21L VIA TXWY S5. WHILE STILL ON S5 AND APCHING S4 MY FO EXCLAIMED THAT AN ACFT WAS RAPIDLY APCHING THE INTERSECTING TXWYS AT THE SAME TIME. THE TXWYS COVERAGE AT AN ANGLE, SO WE DID NOT SEE THE ACFT UNTIL THE VERY LAST. WE WERE SURPRISED BECAUSE GND CTL NEVER INFORMED US THAT ANOTHER ACFT WAS IN THE VICINITY, AND WE NEVER HEARD THE ACFT ON GND CTL. IT APPEARED OUT OF NOWHERE AT NIGHT. WE ADDED SPD QUICKLY AND WE SAW THE GALAXY APPLY BRAKES -- OR A COLLISION WOULD HAVE OCCURRED. IT BECAME CLR THAT BOTH ACFT WERE ON 2 DIFFERENT FREQS AND THAT BOTH WERE CLRED INTO THE RAMP AREAS. CONTRIBUTING FACTORS WERE NIGHTTIME, AND A BREAKDOWN OF ATC PROCS IN THE TXWY SYS LEADING TO THE RAMP AREA ON THE E SIDE OF DTW. TO PREVENT A CLOSE CALL LIKE THIS IN THE FUTURE WOULD BE TO KEEP YOUR HEAD ON A SWIVEL AT NIGHT EVEN WHEN YOU BELIEVE YOU ARE THE ONLY ACFT OPERATING IN THE AREA.

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.