Unauthorized runway entry by air carrier. Uncoord runway entry.

Attributes
ACN	199882
Time
Date	199201
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 20
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : dfw
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	ground other : taxi
Flight Plan	IFR
Aircraft 2
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	landing other
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 6200 flight time type : 1200
ASRS Report	199882
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : ground less severe incursion : runway non adherence : required legal separation
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 2500 vertical : 20
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation other
Situations
ATC Facility	procedure or policy : unspecified
Airport	other physical facility procedure or policy : unspecified

Narrative:

Clearing runways 36 at taxiway 29 cleared to taxi. Asked ground inner or outer? In responding inadvertently taxied on 36 which is poorly marked and looks like an inner taxiway. Callback conversation with reporter revealed the following information: reporter clarified that they had landed on runway 13R and turned off on high speed to taxiway B, then got on taxiway 29, held short of 18R, then were cleared across the right to hold short of 18L, then got cleared to cross, cleared to the gate. Says neither he nor PIC were aware of runway 18/36 and thought that was the 'inner taxiway.' when they made left turn onto inner they saw small aircraft aircraft Y landing in a head on situation on 18. PIC expedited taxi to next turnoff and aircraft Y landed ok. ATC apparently did not notice the incident and nothing was said on the air by anyone involved. Reporter says taxiing at dfw is always confusing. Signs marking taxiways are placed so that it is difficult to tell which taxiway goes with which sign. Vernacular of taxiway designation is also confusing with numbers, letters, and combinations of both being used.

Original NASA ASRS Text

Title: UNAUTHORIZED RWY ENTRY BY ACR. UNCOORD RWY ENTRY.

Narrative: CLRING RWYS 36 AT TAXIWAY 29 CLRED TO TAXI. ASKED GND INNER OR OUTER? IN RESPONDING INADVERTENTLY TAXIED ON 36 WHICH IS POORLY MARKED AND LOOKS LIKE AN INNER TAXIWAY. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR CLARIFIED THAT THEY HAD LANDED ON RWY 13R AND TURNED OFF ON HIGH SPD TO TAXIWAY B, THEN GOT ON TAXIWAY 29, HELD SHORT OF 18R, THEN WERE CLRED ACROSS THE R TO HOLD SHORT OF 18L, THEN GOT CLRED TO CROSS, CLRED TO THE GATE. SAYS NEITHER HE NOR PIC WERE AWARE OF RWY 18/36 AND THOUGHT THAT WAS THE 'INNER TAXIWAY.' WHEN THEY MADE L TURN ONTO INNER THEY SAW SMA ACFT Y LNDG IN A HEAD ON SITUATION ON 18. PIC EXPEDITED TAXI TO NEXT TURNOFF AND ACFT Y LANDED OK. ATC APPARENTLY DID NOT NOTICE THE INCIDENT AND NOTHING WAS SAID ON THE AIR BY ANYONE INVOLVED. RPTR SAYS TAXIING AT DFW IS ALWAYS CONFUSING. SIGNS MARKING TAXIWAYS ARE PLACED SO THAT IT IS DIFFICULT TO TELL WHICH TAXIWAY GOES WITH WHICH SIGN. VERNACULAR OF TAXIWAY DESIGNATION IS ALSO CONFUSING WITH NUMBERS, LETTERS, AND COMBINATIONS OF BOTH BEING USED.

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.