|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||0601 To 1200|
|Locale Reference||atc facility : npa|
|Altitude||msl bound lower : 3000|
msl bound upper : 3000
|Controlling Facilities||tracon : p31|
|Make Model Name||Military Trainer|
|Operating Under FAR Part||other : other|
|Flight Phase||climbout : intermediate altitude|
|Route In Use||departure other|
departure sid : sid
|Make Model Name||Any Unknown or Unlisted Aircraft Manufacturer|
|Operating Under FAR Part||other : unknown|
|Affiliation||government : faa|
|Function||controller : departure|
|Qualification||controller : radar|
|Experience||controller radar : 3|
|Affiliation||government : military|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : military|
|Anomaly||conflict : airborne less severe|
other anomaly other
|Independent Detector||other controllera|
|Miss Distance||horizontal : 1200|
|Primary Problem||Flight Crew Human Performance|
|Air Traffic Incident||Pilot Deviation|
I was working the departure sector for pensacola, which was departing runway 01. The military jet was filed off on a tradr 4 SID. The SID had an initial restr regarding the aircraft's climb rate to 3000 ft. It then has a restr that has the aircraft make a climbing left turn to 4000 ft and hold 4000 ft until a radial south of npa. At the time the situation occurred, I had an overflt whose course would take him 4 mi north of pensacola wbound. Recognizing a potential conflict, I told the military jet on departure to 'maintain 3000 ft, comply with restrs.' I intended for the aircraft to maintain the specified climb rate to 3000 ft, and then fly the departure course of the SID at 3000 ft until further advised. The pilot understood the instruction to mean he should climb to 3000 ft, and then comply with the restr to climb to 4000 ft in his turn. The aircraft passed with 1200 ft vertical separation and then I vectored the military jet to maintain lateral divergence. In hindsight I realize that the phraseology I used could be misleading. However, I was trained to use this phraseology and it used to be in FAA handbook 7110.65. It is no longer there, and I was not briefed that it had been removed. Also, there is no clear phraseology or guidance on how to legally restrict the altitude of a SID departure. This leads to confusion when controllers are using different words to mean the same thing.
Original NASA ASRS Text
Title: PLTDEV OCCURRED WHEN THE MTR CLBED THROUGH THE MAINTAIN ALT ASSIGNED BY THE DEP CTLR FOR TFC SEPARATION FROM AN OVERFLT ACFT.
Narrative: I WAS WORKING THE DEP SECTOR FOR PENSACOLA, WHICH WAS DEPARTING RWY 01. THE MIL JET WAS FILED OFF ON A TRADR 4 SID. THE SID HAD AN INITIAL RESTR REGARDING THE ACFT'S CLB RATE TO 3000 FT. IT THEN HAS A RESTR THAT HAS THE ACFT MAKE A CLBING L TURN TO 4000 FT AND HOLD 4000 FT UNTIL A RADIAL S OF NPA. AT THE TIME THE SIT OCCURRED, I HAD AN OVERFLT WHOSE COURSE WOULD TAKE HIM 4 MI N OF PENSACOLA WBOUND. RECOGNIZING A POTENTIAL CONFLICT, I TOLD THE MIL JET ON DEP TO 'MAINTAIN 3000 FT, COMPLY WITH RESTRS.' I INTENDED FOR THE ACFT TO MAINTAIN THE SPECIFIED CLB RATE TO 3000 FT, AND THEN FLY THE DEP COURSE OF THE SID AT 3000 FT UNTIL FURTHER ADVISED. THE PLT UNDERSTOOD THE INSTRUCTION TO MEAN HE SHOULD CLB TO 3000 FT, AND THEN COMPLY WITH THE RESTR TO CLB TO 4000 FT IN HIS TURN. THE ACFT PASSED WITH 1200 FT VERT SEPARATION AND THEN I VECTORED THE MIL JET TO MAINTAIN LATERAL DIVERGENCE. IN HINDSIGHT I REALIZE THAT THE PHRASEOLOGY I USED COULD BE MISLEADING. HOWEVER, I WAS TRAINED TO USE THIS PHRASEOLOGY AND IT USED TO BE IN FAA HANDBOOK 7110.65. IT IS NO LONGER THERE, AND I WAS NOT BRIEFED THAT IT HAD BEEN REMOVED. ALSO, THERE IS NO CLR PHRASEOLOGY OR GUIDANCE ON HOW TO LEGALLY RESTRICT THE ALT OF A SID DEP. THIS LEADS TO CONFUSION WHEN CTLRS ARE USING DIFFERENT WORDS TO MEAN THE SAME THING.
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.