Captain of air carrier medium large transport aircraft stopped climbing in response to a TCASII comm...

Attributes
ACN	213566
Time
Date	199206
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : oed airport : mfr
State Reference	OR
Altitude	msl bound lower : 11000 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	climbout : intermediate altitude
Route In Use	enroute airway : zse
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : instrument pilot : commercial pilot : cfi pilot : flight engineer
Experience	flight time last 90 days : 150 flight time total : 5000 flight time type : 2500
ASRS Report	213566
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : airborne less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	vertical : 1000
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Received clearance to sfo. VFR climb on course through 17000 ft, maintain FL230. Departed oed runway 32, made left turn, intercepted J-501 10 south oed at 5000 ft. Continued climb. Out of 9000 ft, given frequency change to ZSE and told of northbound traffic, 12 O'clock, 14 mi at 12000 ft, aircraft appeared on TCASII. Had difficulty contacting ZSE. Went back to medford departure, told to level 11000 ft. Note that I leveled at 11000 ft anyway with TCASII TA. It was obvious that if I continued to climb, a near miss or even a midair collision would have occurred. This event could have been prevented had medford been using radar. Medford does not have radar! Also, suspect event would have been prevented if ZSE had coordinated our departure better with medford departure control. There is no doubt that TCASII saved the day. Without TCASII and because of the VHF frequency confusion, I probably would have continued climbing into this northbound traffic.

Original NASA ASRS Text

Title: CAPT OF ACR MLG ACFT STOPPED CLBING IN RESPONSE TO A TCASII COMMAND.

Narrative: RECEIVED CLRNC TO SFO. VFR CLB ON COURSE THROUGH 17000 FT, MAINTAIN FL230. DEPARTED OED RWY 32, MADE L TURN, INTERCEPTED J-501 10 S OED AT 5000 FT. CONTINUED CLB. OUT OF 9000 FT, GIVEN FREQ CHANGE TO ZSE AND TOLD OF NBOUND TFC, 12 O'CLOCK, 14 MI AT 12000 FT, ACFT APPEARED ON TCASII. HAD DIFFICULTY CONTACTING ZSE. WENT BACK TO MEDFORD DEP, TOLD TO LEVEL 11000 FT. NOTE THAT I LEVELED AT 11000 FT ANYWAY WITH TCASII TA. IT WAS OBVIOUS THAT IF I CONTINUED TO CLB, A NEAR MISS OR EVEN A MIDAIR COLLISION WOULD HAVE OCCURRED. THIS EVENT COULD HAVE BEEN PREVENTED HAD MEDFORD BEEN USING RADAR. MEDFORD DOES NOT HAVE RADAR! ALSO, SUSPECT EVENT WOULD HAVE BEEN PREVENTED IF ZSE HAD COORDINATED OUR DEP BETTER WITH MEDFORD DEP CTL. THERE IS NO DOUBT THAT TCASII SAVED THE DAY. WITHOUT TCASII AND BECAUSE OF THE VHF FREQ CONFUSION, I PROBABLY WOULD HAVE CONTINUED CLBING INTO THIS NBOUND TFC.

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.

Captain of air carrier medium large transport aircraft stopped climbing in response to a TCASII command.