After takeoff, a DH8 commuter flight crew inadvertently followed the departure procedure for turbojets. The departure clearance had been amended as a result of a new runway assignment during taxi, and the PF failed to notice that there were 2 procedures for the new runway, one for turbojets and another for all other aircraft.

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Attributes
ACN	337495
Time
Date	199606
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mht
State Reference	NH
Altitude	msl bound lower : 500 msl bound upper : 500
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mht
Operator	common carrier : air carrier
Make Model Name	Dash 8 Series Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	climbout : initial climbout : takeoff
Route In Use	departure other departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 110 flight time total : 5400 flight time type : 110
ASRS Report	337495
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 240 flight time total : 9000 flight time type : 1700
ASRS Report	337500
Events
Anomaly	non adherence : clearance non adherence : published procedure other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

After being issued a clearance with the manchester 2 SID, I climbed and started a turn to a 220 degree heading, following the turbojet transition instead of the runway heading clearance for all other aircraft. Tower brought this to our attention and cleared us subsequently to a 220 degree hg up to 3000 ft. I definitely need to read the sids more carefully, especially early in the morning. Supplemental information from acn 337500: issued manchester 2 departure off runway 35, then was changed on taxi out to manchester 2 departure off runway 17.

Original NASA ASRS Text

Title: AFTER TKOF, A DH8 COMMUTER FLC INADVERTENTLY FOLLOWED THE DEP PROC FOR TURBOJETS. THE DEP CLRNC HAD BEEN AMENDED AS A RESULT OF A NEW RWY ASSIGNMENT DURING TAXI, AND THE PF FAILED TO NOTICE THAT THERE WERE 2 PROCS FOR THE NEW RWY, ONE FOR TURBOJETS AND ANOTHER FOR ALL OTHER ACFT.

Narrative: AFTER BEING ISSUED A CLRNC WITH THE MANCHESTER 2 SID, I CLBED AND STARTED A TURN TO A 220 DEG HDG, FOLLOWING THE TURBOJET TRANSITION INSTEAD OF THE RWY HDG CLRNC FOR ALL OTHER ACFT. TWR BROUGHT THIS TO OUR ATTN AND CLRED US SUBSEQUENTLY TO A 220 DEG HG UP TO 3000 FT. I DEFINITELY NEED TO READ THE SIDS MORE CAREFULLY, ESPECIALLY EARLY IN THE MORNING. SUPPLEMENTAL INFO FROM ACN 337500: ISSUED MANCHESTER 2 DEP OFF RWY 35, THEN WAS CHANGED ON TAXI OUT TO MANCHESTER 2 DEP OFF RWY 17.

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.