Local controller at iad issued taxi instructions while landing aircraft is in deep reverse pitch.

Attributes
ACN	493726
Time
Date	200011
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : iad.airport
State Reference	VA
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Jetstream 32
Operating Under FAR Part	Part 121
Flight Phase	landing : roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : commercial pilot : cfi pilot : instrument pilot : atp
Experience	flight time last 90 days : 270 flight time total : 2900 flight time type : 1800
ASRS Report	493726
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	non adherence : clearance non adherence : far
Independent Detector	other controllera other controllerb
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	ATC Human Performance Flight Crew Human Performance
Primary Problem	Ambiguous

Narrative:

After landing on runway 16 at dulles, we cleared the runway at the first high speed taxiway in order to help the tower out with aircraft spacing behind us. As we were in deep reverse (which is quite loud) and still on the runway, tower gave instructions to clear the runway and to contact ground. Normally at dulles, tower says to continue taxiing and to contact ground. With the loud noise from reverse pitch, we both thought that is what the tower said to do. So I continued to taxi on the parallel taxiway and called ground. Ground informed us that the tower's intention was for us to hold short of the parallel taxiway and then call ground for further clearance. It was incorrect of us to assume that we were not to hold short of the parallel taxiway, and we should have asked for clarification after clearing the runway. A contributing factor is dulles' bad habit of issuing taxi instructions immediately after touchdown, which I still consider to be a critical phase of flight. Also, this was the 6TH and last leg of a 12 hour duty day, so fatigue may have been a factor.

Original NASA ASRS Text

Title: LCL CTLR AT IAD ISSUED TAXI INSTRUCTIONS WHILE LNDG ACFT IS IN DEEP REVERSE PITCH.

Narrative: AFTER LNDG ON RWY 16 AT DULLES, WE CLRED THE RWY AT THE FIRST HIGH SPD TXWY IN ORDER TO HELP THE TWR OUT WITH ACFT SPACING BEHIND US. AS WE WERE IN DEEP REVERSE (WHICH IS QUITE LOUD) AND STILL ON THE RWY, TWR GAVE INSTRUCTIONS TO CLR THE RWY AND TO CONTACT GND. NORMALLY AT DULLES, TWR SAYS TO CONTINUE TAXIING AND TO CONTACT GND. WITH THE LOUD NOISE FROM REVERSE PITCH, WE BOTH THOUGHT THAT IS WHAT THE TWR SAID TO DO. SO I CONTINUED TO TAXI ON THE PARALLEL TXWY AND CALLED GND. GND INFORMED US THAT THE TWR'S INTENTION WAS FOR US TO HOLD SHORT OF THE PARALLEL TXWY AND THEN CALL GND FOR FURTHER CLRNC. IT WAS INCORRECT OF US TO ASSUME THAT WE WERE NOT TO HOLD SHORT OF THE PARALLEL TXWY, AND WE SHOULD HAVE ASKED FOR CLARIFICATION AFTER CLRING THE RWY. A CONTRIBUTING FACTOR IS DULLES' BAD HABIT OF ISSUING TAXI INSTRUCTIONS IMMEDIATELY AFTER TOUCHDOWN, WHICH I STILL CONSIDER TO BE A CRITICAL PHASE OF FLT. ALSO, THIS WAS THE 6TH AND LAST LEG OF A 12 HR DUTY DAY, SO FATIGUE MAY HAVE BEEN A FACTOR.

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.