Altitude deviation altitude excursion.

Attributes
ACN	213095
Time
Date	199206
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : oal
State Reference	NV
Altitude	msl bound lower : 35000 msl bound upper : 35900
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zlc
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Navigation In Use	Other
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 15000 flight time type : 900
ASRS Report	213095
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 160 flight time total : 15000 flight time type : 2000
ASRS Report	212454
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	none taken : anomaly accepted
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

Sudden display of conflicting traffic (TCASII TA) at 2 mi, 12 O'clock at our altitude followed immediately by TCASII RA (climb, climb). PF (reporter) disconnected autoplt and initiated climb to 35900 ft when conflict ceased. No visual contact made and ATC indicated no traffic in our area. During discussion with ATC approximately 6 other TA's were issued (phantoms) by TCASII, all at our altitude and various position around our aircraft. 1 additional RA was issued (descend, descend) calling for 2000 FPM descent. ATC indicated this was a continual problem near tonopah, nv.

Original NASA ASRS Text

Title: ALTDEV ALT EXCURSION.

Narrative: SUDDEN DISPLAY OF CONFLICTING TFC (TCASII TA) AT 2 MI, 12 O'CLOCK AT OUR ALT FOLLOWED IMMEDIATELY BY TCASII RA (CLB, CLB). PF (RPTR) DISCONNECTED AUTOPLT AND INITIATED CLB TO 35900 FT WHEN CONFLICT CEASED. NO VISUAL CONTACT MADE AND ATC INDICATED NO TFC IN OUR AREA. DURING DISCUSSION WITH ATC APPROX 6 OTHER TA'S WERE ISSUED (PHANTOMS) BY TCASII, ALL AT OUR ALT AND VARIOUS POS AROUND OUR ACFT. 1 ADDITIONAL RA WAS ISSUED (DSND, DSND) CALLING FOR 2000 FPM DSCNT. ATC INDICATED THIS WAS A CONTINUAL PROBLEM NEAR TONOPAH, NV.

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.