Narrative:

We received the MMU5 departure from clearance. Taxi out to runway 5 was uneventful and we were given a short delay prior to departure. It appeared that 1 controller was working all frequencys. Tower cleared us for takeoff with no special instructions to deviate from the MMU5 that either of us was aware of. The MMU5 off of runway 5 calls for runway heading to 1700 ft right to 160 degree heading climb to 2000 ft. At approximately 1500 ft we were told to contact ny departure. We reached 1700 ft; started our right turn to 160 degrees; leveled off at 2000 ft and contacted departure. Departure cleared us to 6000 ft and gave us direct to brezy intersection. The first officer (PF) was hand flying level at 2000 ft in a r-hand turn coming through about a 120 degree heading. I selected 6000 ft on the altitude selector and selected direct brezy on the FMS. Direct to brezy was now a left turn to the north. I advised the first officer that brezy was now a left turn and he began to turn to the left and started to climb. Right after beginning our climb we realized a TA followed almost immediately by an RA to descend. The first officer complied with the RA and we noticed traffic on the TCAS; 500 ft directly above us. We also observed the traffic above us climb as well and can only assume he had TCAS; too. We were solid IMC and unable to see the traffic. Immediately ATC advised us of the conflict and we advised him that we were descending due to an RA. Departure stated that we were supposed to be on runway heading after takeoff as instructed by the tower. He then inquired to our departure instructions and we told him that we were given the MMU5 off of runway 5; not runway heading. Departure placed a call to mmu tower and stated that tower apologized and that he had neglected to tell us to fly runway heading after takeoff.

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Original NASA ASRS Text

Title: CITATION CE560XL FLT CREW HAS A TCAS RA DEPARTING MMU.

Narrative: WE RECEIVED THE MMU5 DEP FROM CLRNC. TAXI OUT TO RWY 5 WAS UNEVENTFUL AND WE WERE GIVEN A SHORT DELAY PRIOR TO DEP. IT APPEARED THAT 1 CTLR WAS WORKING ALL FREQS. TWR CLRED US FOR TKOF WITH NO SPECIAL INSTRUCTIONS TO DEVIATE FROM THE MMU5 THAT EITHER OF US WAS AWARE OF. THE MMU5 OFF OF RWY 5 CALLS FOR RWY HDG TO 1700 FT R TO 160 DEG HDG CLB TO 2000 FT. AT APPROX 1500 FT WE WERE TOLD TO CONTACT NY DEP. WE REACHED 1700 FT; STARTED OUR R TURN TO 160 DEGS; LEVELED OFF AT 2000 FT AND CONTACTED DEP. DEP CLRED US TO 6000 FT AND GAVE US DIRECT TO BREZY INTXN. THE FO (PF) WAS HAND FLYING LEVEL AT 2000 FT IN A R-HAND TURN COMING THROUGH ABOUT A 120 DEG HDG. I SELECTED 6000 FT ON THE ALT SELECTOR AND SELECTED DIRECT BREZY ON THE FMS. DIRECT TO BREZY WAS NOW A L TURN TO THE N. I ADVISED THE FO THAT BREZY WAS NOW A L TURN AND HE BEGAN TO TURN TO THE L AND STARTED TO CLB. RIGHT AFTER BEGINNING OUR CLB WE REALIZED A TA FOLLOWED ALMOST IMMEDIATELY BY AN RA TO DSND. THE FO COMPLIED WITH THE RA AND WE NOTICED TFC ON THE TCAS; 500 FT DIRECTLY ABOVE US. WE ALSO OBSERVED THE TFC ABOVE US CLB AS WELL AND CAN ONLY ASSUME HE HAD TCAS; TOO. WE WERE SOLID IMC AND UNABLE TO SEE THE TFC. IMMEDIATELY ATC ADVISED US OF THE CONFLICT AND WE ADVISED HIM THAT WE WERE DSNDING DUE TO AN RA. DEP STATED THAT WE WERE SUPPOSED TO BE ON RWY HDG AFTER TKOF AS INSTRUCTED BY THE TWR. HE THEN INQUIRED TO OUR DEP INSTRUCTIONS AND WE TOLD HIM THAT WE WERE GIVEN THE MMU5 OFF OF RWY 5; NOT RWY HDG. DEP PLACED A CALL TO MMU TWR AND STATED THAT TWR APOLOGIZED AND THAT HE HAD NEGLECTED TO TELL US TO FLY RWY HDG AFTER TKOF.

Data retrieved from NASA's ASRS site as of January 2009 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.