Failed to comply with SID to maintain runway heading.

Attributes
ACN	164591
Time
Date	199012
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : bos
State Reference	MA
Altitude	agl bound lower : 300 agl bound upper : 300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : bos
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	climbout : initial
Route In Use	departure sid : sid
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 150 flight time total : 800 flight time type : 100
ASRS Report	164591
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	non adherence : published procedure non adherence : clearance 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:

On departure from runway 22R, we started a left turn to 140 degree heading. Tower then came back and directed a right to 270 degrees, and asked us why we started a left. We told him it was as per logan 7 SID. He then pointed out that the SID specified the left turn for turbojets only, non turbojets to runway heading only. As I look now, I can see that he's correct. The way the chart's published, it is easy to overlook the non turbojet note (we use commercial charts). Perhaps a special, unique chart should be created when the difference is so large, or a special code, symbol, font, something used to help avoid this confusion. I do and did make a sincere effort to review and understand the SID, yet I missed the difference between the turbojet and non turbojet rtes. This leads me to think that perhaps they should be 2 separate procedures/plates (note that there is nothing in common between turbojet and non turbojet procedures, expect for initial altitude and departure frequency).

Original NASA ASRS Text

Title: FAILED TO COMPLY WITH SID TO MAINTAIN RWY HEADING.

Narrative: ON DEP FROM RWY 22R, WE STARTED A LEFT TURN TO 140 DEG HDG. TWR THEN CAME BACK AND DIRECTED A RIGHT TO 270 DEGS, AND ASKED US WHY WE STARTED A LEFT. WE TOLD HIM IT WAS AS PER LOGAN 7 SID. HE THEN POINTED OUT THAT THE SID SPECIFIED THE LEFT TURN FOR TURBOJETS ONLY, NON TURBOJETS TO RWY HDG ONLY. AS I LOOK NOW, I CAN SEE THAT HE'S CORRECT. THE WAY THE CHART'S PUBLISHED, IT IS EASY TO OVERLOOK THE NON TURBOJET NOTE (WE USE COMMERCIAL CHARTS). PERHAPS A SPECIAL, UNIQUE CHART SHOULD BE CREATED WHEN THE DIFFERENCE IS SO LARGE, OR A SPECIAL CODE, SYMBOL, FONT, SOMETHING USED TO HELP AVOID THIS CONFUSION. I DO AND DID MAKE A SINCERE EFFORT TO REVIEW AND UNDERSTAND THE SID, YET I MISSED THE DIFFERENCE BTWN THE TURBOJET AND NON TURBOJET RTES. THIS LEADS ME TO THINK THAT PERHAPS THEY SHOULD BE 2 SEPARATE PROCS/PLATES (NOTE THAT THERE IS NOTHING IN COMMON BTWN TURBOJET AND NON TURBOJET PROCS, EXPECT FOR INITIAL ALT AND DEP FREQ).

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.