TCASII RA creates an altitude deviation altitude excursion by PIC.

Attributes
ACN	199869
Time
Date	199201
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : sna
State Reference	CA
Altitude	msl bound lower : 5000 msl bound upper : 5500
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sna
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	cruise other
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
Experience	flight time last 90 days : 200 flight time total : 11000 flight time type : 2800
ASRS Report	199869
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : required legal separation non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 6000 vertical : 200
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

TCASII þraþ deviation. Climbed 500 ft to avoid conflict. Communication difficulties with coast approach. Too busy to answer. Deviated 500 ft from assigned altitude of 5000 ft.

Original NASA ASRS Text

Title: TCASII RA CREATES AN ALTDEV ALT EXCURSION BY PIC.

Narrative: TCASII þRAþ DEV. CLBED 500 FT TO AVOID CONFLICT. COM DIFFICULTIES WITH COAST APCH. TOO BUSY TO ANSWER. DEVIATED 500 FT FROM ASSIGNED ALT OF 5000 FT.

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.