Air carrier X runway incursion caused B-727 go around.

Attributes
ACN	304332
Time
Date	199505
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : stl
State Reference	MO
Altitude	agl bound lower : 0 agl bound upper : 600
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	DC-9 50
Operating Under FAR Part	Part 121
Flight Phase	ground other : taxi
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : approach landing : go around
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Experience	flight time last 90 days : 120 flight time total : 10000 flight time type : 6000
ASRS Report	304332
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	incursion : runway non adherence : published procedure non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	other other
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 12000 vertical : 600
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Air carrier X approached the #1 position at the approach end of runway 12R and switched over to tower frequency (118.5). We heard tower say cleared into position and hold runway 12R. Since we were #1 for takeoff at the approach end, we assumed the call was for us. We acknowledged the transmission and responded that we were going into position and hold runway 12. To confirm the instruction was for us we asked tower to confirm position and hold. While making this radio call we partially blocked tower's next transmission which was 'there's a B-727 on a 2 mi final cleared for an immediate takeoff.' I still thought tower was talking to us until I looked down the runway and saw a light twin on takeoff roll. At that time I advised tower we thought the instruction were for us and that we had entered the runway edge. He said 'no he had not cleared us on the runway but thanked us for advising him,' he then sent the B-727 on final around. I believe the controller's rush to get aircraft airborne, and not using full call signs and his failure to acknowledge our xmissions contributed to the confusion resulting in our entering onto the runway. Additionally, because we were #1 for takeoff and heard the standard terminology associated with being #1 for takeoff, we heard what we anticipated hearing in that situation.

Original NASA ASRS Text

Title: ACR X RWY INCURSION CAUSED B-727 GAR.

Narrative: ACR X APCHED THE #1 POS AT THE APCH END OF RWY 12R AND SWITCHED OVER TO TWR FREQ (118.5). WE HEARD TWR SAY CLRED INTO POS AND HOLD RWY 12R. SINCE WE WERE #1 FOR TKOF AT THE APCH END, WE ASSUMED THE CALL WAS FOR US. WE ACKNOWLEDGED THE XMISSION AND RESPONDED THAT WE WERE GOING INTO POS AND HOLD RWY 12. TO CONFIRM THE INSTRUCTION WAS FOR US WE ASKED TWR TO CONFIRM POS AND HOLD. WHILE MAKING THIS RADIO CALL WE PARTIALLY BLOCKED TWR'S NEXT XMISSION WHICH WAS 'THERE'S A B-727 ON A 2 MI FINAL CLRED FOR AN IMMEDIATE TKOF.' I STILL THOUGHT TWR WAS TALKING TO US UNTIL I LOOKED DOWN THE RWY AND SAW A LIGHT TWIN ON TKOF ROLL. AT THAT TIME I ADVISED TWR WE THOUGHT THE INSTRUCTION WERE FOR US AND THAT WE HAD ENTERED THE RWY EDGE. HE SAID 'NO HE HAD NOT CLRED US ON THE RWY BUT THANKED US FOR ADVISING HIM,' HE THEN SENT THE B-727 ON FINAL AROUND. I BELIEVE THE CTLR'S RUSH TO GET ACFT AIRBORNE, AND NOT USING FULL CALL SIGNS AND HIS FAILURE TO ACKNOWLEDGE OUR XMISSIONS CONTRIBUTED TO THE CONFUSION RESULTING IN OUR ENTERING ONTO THE RWY. ADDITIONALLY, BECAUSE WE WERE #1 FOR TKOF AND HEARD THE STANDARD TERMINOLOGY ASSOCIATED WITH BEING #1 FOR TKOF, WE HEARD WHAT WE ANTICIPATED HEARING IN THAT SIT.

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.