B737 flight crew fails to stop at hold line. Ground controller intervenes.

Attributes
ACN	321450
Time
Date	199511
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : elp
State Reference	TX
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 230 flight time total : 9000 flight time type : 5000
ASRS Report	321450
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : atp
Events
Anomaly	incursion : runway non adherence : clearance non adherence : far
Independent Detector	other controllera
Resolutory Action	other other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

El paso international ground operations: directed to taxi from gate, watch for company coming in from runway 22. Captain understood to taxi to runway 22 (but might have really been runway 26). Confusion developed when company chatter partially covered up ground transmission. Captain readjusted volume level down on company and accidentally bumped volume down on ground. Approaching runway 8/26 cautiously, we were directed to hold short. I did not hear that transmission. Ground noticed that our aircraft had slowed down, but not stopped. Ground yelled 'stop' loud enough on the radio that I heard the instruction and stopped (with the aircraft nose just past the hold short line). I realized what had happened and readjusted volume control. Thanks to an alert ground crew we did not taxi onto an active runway. However, I did reemphasize to my first officer that he must ensure immediate and correct captain compliance to tower control or take corrective action. Lessons: 1) always repeat ground commands vocally between the cockpit crew, ensure agreement, 2) always rechk volume controls changes with squelch button, and 3) brief coplts that ground taxi are also part of their responsibilities.

Original NASA ASRS Text

Title: B737 FLC FAILS TO STOP AT HOLD LINE. GND CTLR INTERVENES.

Narrative: EL PASO INTL GND OPS: DIRECTED TO TAXI FROM GATE, WATCH FOR COMPANY COMING IN FROM RWY 22. CAPT UNDERSTOOD TO TAXI TO RWY 22 (BUT MIGHT HAVE REALLY BEEN RWY 26). CONFUSION DEVELOPED WHEN COMPANY CHATTER PARTIALLY COVERED UP GND XMISSION. CAPT READJUSTED VOLUME LEVEL DOWN ON COMPANY AND ACCIDENTALLY BUMPED VOLUME DOWN ON GND. APCHING RWY 8/26 CAUTIOUSLY, WE WERE DIRECTED TO HOLD SHORT. I DID NOT HEAR THAT XMISSION. GND NOTICED THAT OUR ACFT HAD SLOWED DOWN, BUT NOT STOPPED. GND YELLED 'STOP' LOUD ENOUGH ON THE RADIO THAT I HEARD THE INSTRUCTION AND STOPPED (WITH THE ACFT NOSE JUST PAST THE HOLD SHORT LINE). I REALIZED WHAT HAD HAPPENED AND READJUSTED VOLUME CTL. THANKS TO AN ALERT GND CREW WE DID NOT TAXI ONTO AN ACTIVE RWY. HOWEVER, I DID REEMPHASIZE TO MY FO THAT HE MUST ENSURE IMMEDIATE AND CORRECT CAPT COMPLIANCE TO TWR CTL OR TAKE CORRECTIVE ACTION. LESSONS: 1) ALWAYS REPEAT GND COMMANDS VOCALLY BTWN THE COCKPIT CREW, ENSURE AGREEMENT, 2) ALWAYS RECHK VOLUME CTLS CHANGES WITH SQUELCH BUTTON, AND 3) BRIEF COPLTS THAT GND TAXI ARE ALSO PART OF THEIR RESPONSIBILITIES.

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.