Narrative:

We were departing ont about XX30 local time. We were cleared via the pomona 6 departure daggett transition. We were cleared to 14000 ft. As a crew, we briefed and reviewed the departure, which called for a 255 heading to intercept the pom 114 degree radial to pom, then the 301 degree radial outbound to intercept the dag 047 degree radial. Climbing through about 5000, we were instructed to comply with restrictions. I had not heard any restrictions when we received our clearance, and had not noticed any on the chart. I glanced at the departure chart and saw a note that, if unable to comply with the bucck or froun restriction, we should advise ATC. With that thought in mind, I looked for restrictions at bucck and froun and found that froun was on our route and it called for crossing froun at 14000. We were already cleared to 14000, so I felt that we were doing as instructed. Crossing the pom VOR, the controller instructed us to stop our climb. I wasn't sure why, and referred back to the departure chart. At this time, I noticed the restriction to 8000 over pom. Shortly after crossing pom, we were cleared on up to 14000. I just hadn't seen the restriction over pom. I think a lot of this problem was caused by the difference between the nos charts we were using and commercial charts that I'm most familiar with. In the narrative of the departure on the commercial charts it describes clearly the 8000 restriction at pom, but not so on the nos charts. The only place the restriction is mentioned on the nos chart is one spot below the frequency box. Now that I know it is there it is clear to me, but at the time it became lost in all of the additional black print. I think that it would have been helpful to have been cleared to 8000 ft initially instead of the 14000. It would also have been helpful in my opinion if the written description between the commercial charts and the nos charts were more standard in their wording.

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Original NASA ASRS Text

Title: CPR ACFT HAS ALTDEV DUE TO MISREAD OF DEP CHART RESTRICTION.

Narrative: WE WERE DEPARTING ONT ABOUT XX30 LCL TIME. WE WERE CLRED VIA THE POMONA 6 DEP DAGGETT TRANSITION. WE WERE CLRED TO 14000 FT. AS A CREW, WE BRIEFED AND REVIEWED THE DEP, WHICH CALLED FOR A 255 HDG TO INTERCEPT THE POM 114 DEG RADIAL TO POM, THEN THE 301 DEG RADIAL OUTBOUND TO INTERCEPT THE DAG 047 DEG RADIAL. CLBING THROUGH ABOUT 5000, WE WERE INSTRUCTED TO COMPLY WITH RESTRICTIONS. I HAD NOT HEARD ANY RESTRICTIONS WHEN WE RECEIVED OUR CLRNC, AND HAD NOT NOTICED ANY ON THE CHART. I GLANCED AT THE DEP CHART AND SAW A NOTE THAT, IF UNABLE TO COMPLY WITH THE BUCCK OR FROUN RESTRICTION, WE SHOULD ADVISE ATC. WITH THAT THOUGHT IN MIND, I LOOKED FOR RESTRICTIONS AT BUCCK AND FROUN AND FOUND THAT FROUN WAS ON OUR RTE AND IT CALLED FOR XING FROUN AT 14000. WE WERE ALREADY CLRED TO 14000, SO I FELT THAT WE WERE DOING AS INSTRUCTED. XING THE POM VOR, THE CTLR INSTRUCTED US TO STOP OUR CLB. I WASN'T SURE WHY, AND REFERRED BACK TO THE DEP CHART. AT THIS TIME, I NOTICED THE RESTRICTION TO 8000 OVER POM. SHORTLY AFTER XING POM, WE WERE CLRED ON UP TO 14000. I JUST HADN'T SEEN THE RESTRICTION OVER POM. I THINK A LOT OF THIS PROB WAS CAUSED BY THE DIFFERENCE BTWN THE NOS CHARTS WE WERE USING AND COMMERCIAL CHARTS THAT I'M MOST FAMILIAR WITH. IN THE NARRATIVE OF THE DEP ON THE COMMERCIAL CHARTS IT DESCRIBES CLRLY THE 8000 RESTRICTION AT POM, BUT NOT SO ON THE NOS CHARTS. THE ONLY PLACE THE RESTRICTION IS MENTIONED ON THE NOS CHART IS ONE SPOT BELOW THE FREQ BOX. NOW THAT I KNOW IT IS THERE IT IS CLR TO ME, BUT AT THE TIME IT BECAME LOST IN ALL OF THE ADDITIONAL BLACK PRINT. I THINK THAT IT WOULD HAVE BEEN HELPFUL TO HAVE BEEN CLRED TO 8000 FT INITIALLY INSTEAD OF THE 14000. IT WOULD ALSO HAVE BEEN HELPFUL IN MY OPINION IF THE WRITTEN DESCRIPTION BTWN THE COMMERCIAL CHARTS AND THE NOS CHARTS WERE MORE STANDARD IN THEIR WORDING.

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.