TCASII RA. - NASA ASRS

Attributes
ACN	281430
Time
Date	199408
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : gen
State Reference	FO
Altitude	msl bound lower : 26000 msl bound upper : 26800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Route In Use	enroute airway : limm
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : flight engineer pilot : atp pilot : commercial
Experience	flight time last 90 days : 240 flight time total : 18000 flight time type : 900
ASRS Report	281430
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	altitude deviation : excursion from assigned altitude non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 1000 vertical : 800
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Hard TCASII alert 'traffic/climb.' climbed 800 ft to FL268, called milan control 125.27 at 1035 Z to inform of hard TCASII alert and climb action. Milan controller said 'no problem, you have 5 mi separation -- maybe you should turn your TCASII to standby.' red DOT at FL260 was within 2 1/2 mi ring on 5 mi scale. No doubt in my mind at the hard TCASII alert was valid, and the intruder passed 800 ft below and just behind after climb.

Original NASA ASRS Text

Title: TCASII RA.

Narrative: HARD TCASII ALERT 'TFC/CLB.' CLBED 800 FT TO FL268, CALLED MILAN CTL 125.27 AT 1035 Z TO INFORM OF HARD TCASII ALERT AND CLB ACTION. MILAN CTLR SAID 'NO PROB, YOU HAVE 5 MI SEPARATION -- MAYBE YOU SHOULD TURN YOUR TCASII TO STANDBY.' RED DOT AT FL260 WAS WITHIN 2 1/2 MI RING ON 5 MI SCALE. NO DOUBT IN MY MIND AT THE HARD TCASII ALERT WAS VALID, AND THE INTRUDER PASSED 800 FT BELOW AND JUST BEHIND AFTER CLB.

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.