<< >> NASA ASRS Report 525100, September 2001

Confusion between a B737 crew and a bna local controller as to whether a clearance to taxi into position and hold was issued.

Attributes
ACN	525100
Time
Date	200109
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bna.airport
State Reference	TN
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Aircraft 1
Controlling Facilities	tower : bna.tower
Operator	common carrier : air carrier
Make Model Name	B737-700
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	ground : position and hold ground : holding
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : bna.tower
Operator	general aviation : personal
Make Model Name	Small Aircraft
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Route In Use	approach : visual
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Experience	flight time last 90 days : 100 flight time total : 9000 flight time type : 7000
ASRS Report	525100
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 14300 flight time type : 12000
ASRS Report	525099
Events
Anomaly	incursion : runway non adherence : published procedure
Resolutory Action	controller : separated traffic controller : issued new clearance none taken : anomaly accepted
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Ambiguous

Narrative:

We taxied out to runway 20C and were holding short behind another aircraft. Once he was cleared for takeoff, we moved up to hold short line and held short. We held short at least 4 min before a female tower controller issued the following clearance 'runway 20C taxi into position and hold, traffic on a 2 mi final.' as soon as she said that, the captain released brakes and started moving onto the runway. I told the captain that there was a little guy on short final. As we were about to align ourselves with runway 20C, tower said that she never cleared us onto hold. I said, 'yes ma'am, I even read back position and hold and you didn't say anything back.' take note: I read back what I heard and the captain pushed the attendant call button at the same time indicating that we both understood the 'taxi into position and hold' call.

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Original NASA ASRS Text

Title: CONFUSION BETWEEN A B737 CREW AND A BNA LCL CTLR AS TO WHETHER A CLRNC TO TAXI INTO POS AND HOLD WAS ISSUED.

Narrative: WE TAXIED OUT TO RWY 20C AND WERE HOLDING SHORT BEHIND ANOTHER ACFT. ONCE HE WAS CLRED FOR TKOF, WE MOVED UP TO HOLD SHORT LINE AND HELD SHORT. WE HELD SHORT AT LEAST 4 MIN BEFORE A FEMALE TWR CTLR ISSUED THE FOLLOWING CLRNC 'RWY 20C TAXI INTO POS AND HOLD, TFC ON A 2 MI FINAL.' AS SOON AS SHE SAID THAT, THE CAPT RELEASED BRAKES AND STARTED MOVING ONTO THE RWY. I TOLD THE CAPT THAT THERE WAS A LITTLE GUY ON SHORT FINAL. AS WE WERE ABOUT TO ALIGN OURSELVES WITH RWY 20C, TWR SAID THAT SHE NEVER CLRED US ONTO HOLD. I SAID, 'YES MA'AM, I EVEN READ BACK POS AND HOLD AND YOU DIDN'T SAY ANYTHING BACK.' TAKE NOTE: I READ BACK WHAT I HEARD AND THE CAPT PUSHED THE ATTENDANT CALL BUTTON AT THE SAME TIME INDICATING THAT WE BOTH UNDERSTOOD THE 'TAXI INTO POS AND HOLD' CALL.

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.