Narrative:

PRADO7 departure; out of ont; has numerous multiple crossing restrictions of which we were on course to make. However; my first officer and I were flying the departure in an older analog -300 with no autothrottles and were receiving altitude clearance limit cancellations on climbout (i.e. 'Climb unrestricted to altitudes X.') when at approximately 8;000 ft and climbing; we received a clearance to climb to 14;000 ft. I tried; as the pilot not flying to delete the other altitudes in the CDU so as to prevent the aircraft from stopping at 9;000 ft but I was apparently a little too slow and the FMC commanded the plane to level at 9;000 ft. Without autothrottles; the plane grabbed the altitude and began to accelerate through 250 KTS. My first officer who was flying immediately pulled the power back to slow the plane; but not before it had accelerated to approximately 258 KTS. I quickly finished programming the CDU; the first officer reselected VNAV and we continued the SID in normal flight with no further problems. The older model aircraft just take more time and attention to fly with full automation with no autothrottles for thrust setting and no moving map. The geela arrival into phx is fairly workload intensive in a non-autothrottle aircraft; as are most arrivals or departures with multiple speed and altitude restrictions.I know ATC is just trying to help us out by allowing the unrestricted climbs on sids; but when in an older model aircraft; with numerous restrictions; I just as well stay on and fly the programmed profiles. Multiple CDU changes in short spans of time are just a pain to try to accomplish and invite programming mistakes.

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Original NASA ASRS Text

Title: B737-300 flight crew experienced a speed deviation while on the ONT airport PRADO7 departure. Captain could not reprogram the FMC quick enough from 9;000 FT to the new clearance of 14;000 FT. Aircraft captured the 9;000 FT altitude and accelerated in the process before the crew manually pulled back thrust levers.

Narrative: PRADO7 Departure; out of ONT; has numerous multiple crossing restrictions of which we were on course to make. However; my First Officer and I were flying the departure in an older analog -300 with no autothrottles and were receiving altitude clearance limit cancellations on climbout (i.e. 'climb unrestricted to altitudes X.') When at approximately 8;000 FT and climbing; we received a clearance to climb to 14;000 FT. I tried; as the pilot not flying to delete the other altitudes in the CDU so as to prevent the aircraft from stopping at 9;000 FT but I was apparently a little too slow and the FMC commanded the plane to level at 9;000 FT. Without autothrottles; the plane grabbed the altitude and began to accelerate through 250 KTS. My First Officer who was flying immediately pulled the power back to slow the plane; but not before it had accelerated to approximately 258 KTS. I quickly finished programming the CDU; the First Officer reselected VNAV and we continued the SID in normal flight with no further problems. The older model aircraft just take more time and attention to fly with full automation with no autothrottles for thrust setting and no moving map. The GEELA Arrival into PHX is fairly workload intensive in a non-autothrottle aircraft; as are most arrivals or departures with multiple speed and altitude restrictions.I know ATC is just trying to help us out by allowing the unrestricted climbs on SIDs; but when in an older model aircraft; with numerous restrictions; I just as well stay on and fly the programmed profiles. Multiple CDU changes in short spans of time are just a pain to try to accomplish and invite programming mistakes.

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.