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Air carrier pilot reported that climb gradients to drset should be published for runways 13L and 13R on four sids at dal.

Narrative:

I wanted to share a climb gradient issue out of dal. When departing dal on runway 13R or 13L; the published sids have a waypoint crossing restriction at drset to be at or above 4000 ft MSL. The associated sids are curlo 4; kkity 4; lndre 4; and swtsr 3. This point is only 7 NM off the departure end. This requires a climb gradient of 501 ft per NM to meet this restriction. The sids only list a climb gradient of 500 ft per NM to 1200 ft to meet obstacle clearances. The additional climb gradient to 4000 ft has been a challenge to meet in the older model aircraft and heavies; especially if a reduced takeoff thrust setting is initially programmed.list an [accurately determined] ATC climb gradient of [XXX] feet per NM to 4000 MSL for the associated sids on the charts. In addition; list the distance from runway 13L/right to drset. As a side note; make crews aware that the published climb gradient is for obstacle clearances unless explicitly labeled as an ATC climb gradient. Pilots need to be aware that a higher rate may be required to meet ATC crossing restrictions on a SID or departure procedure; and that ATC assumes we have calculated the climb rate required.

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Original NASA ASRS Text

Title: Air carrier pilot reported that climb gradients to DRSET should be published for Runways 13L and 13R on four SIDs at DAL.

Narrative: I wanted to share a climb gradient issue out of DAL. When departing DAL on Runway 13R or 13L; the published SIDs have a waypoint crossing restriction at DRSET to be at or above 4000 ft MSL. The associated SIDs are CURLO 4; KKITY 4; LNDRE 4; and SWTSR 3. This point is only 7 NM off the departure end. This requires a climb gradient of 501 ft per NM to meet this restriction. The SIDs only list a climb gradient of 500 ft per NM to 1200 ft to meet obstacle clearances. The additional climb gradient to 4000 ft has been a challenge to meet in the older model aircraft and heavies; especially if a reduced takeoff thrust setting is initially programmed.List an [accurately determined] ATC climb gradient of [XXX] feet per NM to 4000 MSL for the associated SIDs on the charts. In addition; list the distance from Runway 13L/R to DRSET. As a side note; make Crews aware that the published climb gradient is for obstacle clearances unless explicitly labeled as an ATC climb gradient. Pilots need to be aware that a higher rate may be required to meet ATC crossing restrictions on a SID or Departure Procedure; and that ATC assumes we have calculated the climb rate required.

Data retrieved from NASA's ASRS site 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.