TRACON controller experienced a loss of separation event when issuing a climb to a succeeding depart...

Attributes
ACN	986559
Time
Date	201112
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	Citation Excel (C560XL)
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Flight Plan	IFR
Aircraft 2
Make Model Name	Citationjet (C525/C526) - CJ I / II / III / IV
Operating Under FAR Part	Part 91
Flight Phase	Climb
Flight Plan	IFR
Person 1
Function	Approach Departure
Qualification	Air Traffic Control Fully Certified
Events
Anomaly	ATC Issue All Types Deviation - Procedural Published Material / Policy

Narrative:

A C560 departed 28R and was instructed to climb to 10;000 on a SID departure. A C525 departed 32 and was instructed to climb to 9;000. He was told to fly runway heading and expect to resume the same SID departure. He was then given a heading of 280 for enroute spacing. The C560 leveled at 10;000 and center had radar. The C525 was given a right turn direct to the fix to resume the SID departure. He was instructed to climb to 10;000 anticipating that previous jet traffic was climbing out of 10;000. The C525 was switched to center. Immediately afterwards; the C560 asked if he could 'get higher'. Airplanes got too close. Separation was lost. Never ever climb and switch aircraft until you see if the previous one is climbing.

Original NASA ASRS Text

Title: TRACON Controller experienced a loss of separation event when issuing a climb to a succeeding departure aircraft not realizing that the leading aircraft had leveled off.

Narrative: A C560 departed 28R and was instructed to climb to 10;000 on a SID departure. A C525 departed 32 and was instructed to climb to 9;000. He was told to fly runway heading and expect to resume the same SID departure. He was then given a heading of 280 for enroute spacing. The C560 leveled at 10;000 and Center had RADAR. The C525 was given a right turn direct to the fix to resume the SID departure. He was instructed to climb to 10;000 anticipating that previous jet traffic was climbing out of 10;000. The C525 was switched to Center. Immediately afterwards; the C560 asked if he could 'get higher'. Airplanes got too close. Separation was lost. Never ever climb and switch aircraft until you see if the previous one is climbing.

Data retrieved from NASA's ASRS site as of April 2012 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.

TRACON controller experienced a loss of separation event when issuing a climb to a succeeding departure aircraft not realizing that the leading aircraft had leveled off.