Flight crew of an medium large transport air carrier aircraft stopped descent and climbed in respons...

Attributes
ACN	250388
Time
Date	199308
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ord
State Reference	IL
Altitude	msl bound lower : 14000 msl bound upper : 14800
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent other
Route In Use	enroute airway : zau
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other
Flight Plan	IFR Combined VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 254 flight time total : 11000 flight time type : 2000
ASRS Report	250388
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : undershoot non adherence : clearance other anomaly other
Independent Detector	other flight crewa other other : unspecified cockpit
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 15000 vertical : 1000
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Copilot was flying on 090 degree heading, radar vectors to ord. Cleared to 11000 ft. Passing 15000 ft clearance was changed to 14000 ft. Approximately 14100 ft TCASII RA alert commanded climb due to aircraft at 13700 ft. Copilot initiated climb and RA extinguished at 14800 ft. Controller, after being notified of climb, confirmed he had VFR traffic (jumpers) at 13700 ft. We were IMC at 14100 ft and never saw aircraft at 13700 ft. An air carrier flight behind us had RA due to same aircraft. Deviation did not create conflict with any other aircraft.

Original NASA ASRS Text

Title: FLC OF AN MLG ACR ACFT STOPPED DSCNT AND CLBED IN RESPONSE TO A TCASII RA.

Narrative: COPLT WAS FLYING ON 090 DEG HDG, RADAR VECTORS TO ORD. CLRED TO 11000 FT. PASSING 15000 FT CLRNC WAS CHANGED TO 14000 FT. APPROX 14100 FT TCASII RA ALERT COMMANDED CLB DUE TO ACFT AT 13700 FT. COPLT INITIATED CLB AND RA EXTINGUISHED AT 14800 FT. CTLR, AFTER BEING NOTIFIED OF CLB, CONFIRMED HE HAD VFR TFC (JUMPERS) AT 13700 FT. WE WERE IMC AT 14100 FT AND NEVER SAW ACFT AT 13700 FT. AN ACR FLT BEHIND US HAD RA DUE TO SAME ACFT. DEV DID NOT CREATE CONFLICT WITH ANY OTHER ACFT.

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.

Flight crew of an medium large transport air carrier aircraft stopped descent and climbed in response to a TCASII RA.