Flight crew of an large transport air carrier aircraft failed to start climb to higher assigned altitude during climb resulting in less than standard separation with another aircraft.

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Attributes
ACN	256343
Time
Date	199311
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sea
State Reference	WA
Altitude	msl bound lower : 5000 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sea
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude
Route In Use	departure other departure sid : sid
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 50 flight time total : 17700 flight time type : 3000
ASRS Report	256343
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 60 flight time total : 8000 flight time type : 150
ASRS Report	256347
Events
Anomaly	altitude deviation : undershoot conflict : airborne less severe non adherence : required legal separation non adherence : clearance other anomaly other
Independent Detector	atc equipment other atc equipment : unspecified other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Miss Distance	horizontal : 18000 vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While departing sea to the north on the suma departure, we were cleared to 5000 ft. After being vectored to the south still at 5000 ft, we were cleared to climb to 11000 ft, which I was unaware of due to not hearing the transmission. My first officer set the 11000 ft in our altitude alerter. He then called our company with our departure information. We then got a TCASII RA for a 5000 ft aircraft crossing at a quartering angle right to left. I responded to the RA with a climb. Departure called also to alert us of the traffic and to climb to 15000 ft, but was partly blocked by another transmission. The problem occurred due to my not starting our climb after we were cleared to do so. The first officer did not wait to get a 'set and arm (altitude)' from me, to know that I was aware of the new altitude to climb to.

Original NASA ASRS Text

Title: FLC OF AN LGT ACR ACFT FAILED TO START CLB TO HIGHER ASSIGNED ALT DURING CLB RESULTING IN LTSS WITH ANOTHER ACFT.

Narrative: WHILE DEPARTING SEA TO THE N ON THE SUMA DEP, WE WERE CLRED TO 5000 FT. AFTER BEING VECTORED TO THE S STILL AT 5000 FT, WE WERE CLRED TO CLB TO 11000 FT, WHICH I WAS UNAWARE OF DUE TO NOT HEARING THE XMISSION. MY FO SET THE 11000 FT IN OUR ALT ALERTER. HE THEN CALLED OUR COMPANY WITH OUR DEP INFO. WE THEN GOT A TCASII RA FOR A 5000 FT ACFT XING AT A QUARTERING ANGLE R TO L. I RESPONDED TO THE RA WITH A CLB. DEP CALLED ALSO TO ALERT US OF THE TFC AND TO CLB TO 15000 FT, BUT WAS PARTLY BLOCKED BY ANOTHER XMISSION. THE PROB OCCURRED DUE TO MY NOT STARTING OUR CLB AFTER WE WERE CLRED TO DO SO. THE FO DID NOT WAIT TO GET A 'SET AND ARM (ALT)' FROM ME, TO KNOW THAT I WAS AWARE OF THE NEW ALT TO CLB TO.

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.