Narrative:

Clearance from ewr was hush 1 SID, flight planned route, maintain 2500'. We had not yet been issued the hush 1 SID by our company but on the previous day we were cleared and flew the hush 1. It was a variation of the newark 2 SID which clearance delivery read to us on the previous day and we flew without incident. We both had written the hush 1 SID procedures down from the previous day and felt no need to have it repeated, especially since clearance delivery frequency was saturated. During the takeoff briefing we reviewed the procedure: left turn to 100 degree, at 3 DME from 108.7 ILS turn right to 220 degree, climb to 2500'. We both questioned the 100 degree heading so the copilot switched back to clearance delivery to confirm it. The frequency was still saturated and he was not able to confirm it by the time we received takeoff clearance. In further discussion we felt it was correct as that was what we did the previous day. On initial contact with ny departure we reported climbing to 2500' and turning to 100 degree. He acknowledged our call. We never reached the 100 degree heading. At 3 DME I rolled out of the left turn (approximately 120 degree at that time) and started a right turn to 220 degree. At that time ny departure asked our heading, we replied 120 degree. In a concerned tone of voice he instructed us to level at 2000'. In subsequent discussion we discovered the initial heading should have been 190 degree. 3 problems: 1) we should not have taken off before confirming SID, 2) sids should not be used until published and all users have it in their possession, 3) ATC acknowledged our call turning to 100 degree.

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Original NASA ASRS Text

Title: ACCEPTED UNPUBLISHED SID ON BASIS OF USE ON PREVIOUS DAY. CTLR QUESTIONED HEADING, THEN GAVE LEVEL OFF INSTRUCTIONS.

Narrative: CLRNC FROM EWR WAS HUSH 1 SID, FLT PLANNED ROUTE, MAINTAIN 2500'. WE HAD NOT YET BEEN ISSUED THE HUSH 1 SID BY OUR COMPANY BUT ON THE PREVIOUS DAY WE WERE CLRED AND FLEW THE HUSH 1. IT WAS A VARIATION OF THE NEWARK 2 SID WHICH CLRNC DELIVERY READ TO US ON THE PREVIOUS DAY AND WE FLEW WITHOUT INCIDENT. WE BOTH HAD WRITTEN THE HUSH 1 SID PROCS DOWN FROM THE PREVIOUS DAY AND FELT NO NEED TO HAVE IT REPEATED, ESPECIALLY SINCE CLRNC DELIVERY FREQ WAS SATURATED. DURING THE TKOF BRIEFING WE REVIEWED THE PROC: LEFT TURN TO 100 DEG, AT 3 DME FROM 108.7 ILS TURN RIGHT TO 220 DEG, CLIMB TO 2500'. WE BOTH QUESTIONED THE 100 DEG HDG SO THE COPLT SWITCHED BACK TO CLRNC DELIVERY TO CONFIRM IT. THE FREQ WAS STILL SATURATED AND HE WAS NOT ABLE TO CONFIRM IT BY THE TIME WE RECEIVED TKOF CLRNC. IN FURTHER DISCUSSION WE FELT IT WAS CORRECT AS THAT WAS WHAT WE DID THE PREVIOUS DAY. ON INITIAL CONTACT WITH NY DEP WE REPORTED CLIMBING TO 2500' AND TURNING TO 100 DEG. HE ACKNOWLEDGED OUR CALL. WE NEVER REACHED THE 100 DEG HDG. AT 3 DME I ROLLED OUT OF THE LEFT TURN (APPROX 120 DEG AT THAT TIME) AND STARTED A RIGHT TURN TO 220 DEG. AT THAT TIME NY DEP ASKED OUR HDG, WE REPLIED 120 DEG. IN A CONCERNED TONE OF VOICE HE INSTRUCTED US TO LEVEL AT 2000'. IN SUBSEQUENT DISCUSSION WE DISCOVERED THE INITIAL HDG SHOULD HAVE BEEN 190 DEG. 3 PROBLEMS: 1) WE SHOULD NOT HAVE TAKEN OFF BEFORE CONFIRMING SID, 2) SIDS SHOULD NOT BE USED UNTIL PUBLISHED AND ALL USERS HAVE IT IN THEIR POSSESSION, 3) ATC ACKNOWLEDGED OUR CALL TURNING TO 100 DEG.

Data retrieved from NASA's ASRS site as of August 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.