WW24 failed to meet altitude climb restr. Pilot deviation.

Attributes
ACN	291251
Time
Date	199412
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : jan
State Reference	MS
Altitude	msl bound lower : 34000 msl bound upper : 39000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zme
Operator	general aviation : personal
Make Model Name	IAI1124/1124A/Westwind
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller non radar : 1 controller radar : 10
ASRS Report	291251
Person 2
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : undershoot non adherence : clearance
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On oct/xx/94, a WW24 new-AR6 destination checked on frequency leaving FL270 or FL280 climbing to FL390. The WW24 was 30 east mcb. At the same time, a B727 was 10 south mei direct das at FL250. Observing the possible situation when aircraft may pass less than 5 mi, I measured the time when separation would be lost, subtracted 3 mins, and cleared the WW24 to cross that point in time at or above FL370. The WW24's pilot accepted the clearance. 30 seconds before the WW24 was to reach FL370, I observed the aircraft leaving FL340. I questioned the pilot to verify he would meet the restr. He advised he didn't think so. I turned the WW24 to a 270 degree heading and the B727 to a 150 degree heading. Aircraft passed within 7 mi of each other.

Original NASA ASRS Text

Title: WW24 FAILED TO MEET ALT CLB RESTR. PLTDEV.

Narrative: ON OCT/XX/94, A WW24 NEW-AR6 DEST CHKED ON FREQ LEAVING FL270 OR FL280 CLBING TO FL390. THE WW24 WAS 30 E MCB. AT THE SAME TIME, A B727 WAS 10 S MEI DIRECT DAS AT FL250. OBSERVING THE POSSIBLE SIT WHEN ACFT MAY PASS LESS THAN 5 MI, I MEASURED THE TIME WHEN SEPARATION WOULD BE LOST, SUBTRACTED 3 MINS, AND CLRED THE WW24 TO CROSS THAT POINT IN TIME AT OR ABOVE FL370. THE WW24'S PLT ACCEPTED THE CLRNC. 30 SECONDS BEFORE THE WW24 WAS TO REACH FL370, I OBSERVED THE ACFT LEAVING FL340. I QUESTIONED THE PLT TO VERIFY HE WOULD MEET THE RESTR. HE ADVISED HE DIDN'T THINK SO. I TURNED THE WW24 TO A 270 DEG HDG AND THE B727 TO A 150 DEG HDG. ACFT PASSED WITHIN 7 MI OF EACH OTHER.

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.