Air carrier Y TCASII RA climb from assigned altitude. Non adherence to ATC clearance unauthorized penetration of center airspace. See and avoid concept with VFR small aircraft X. Pilot deviation.

Home

Browse by month

Random

Latest

About

Contact

Attributes
ACN	231880
Time
Date	199301
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : cha
State Reference	TN
Altitude	msl bound lower : 9500 msl bound upper : 10000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : cha
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Retractable Gear
Flight Phase	climbout : intermediate altitude cruise other
Route In Use	enroute : direct enroute airway : ztl enroute airway : cha
Flight Plan	VFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar
Experience	controller radar : 3
ASRS Report	231880
Person 2
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Events
Anomaly	altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 24000 vertical : 500
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Intra Facility Coordination Failure Pilot Deviation

Narrative:

Small aircraft X departed cha climbing to 14500 ft VFR sebound. Air carrier Y transitioning airspace southeast to northwest at 10000 ft. Air carrier Y notified of traffic 12 O'clock, 7 mi. Small aircraft X notified traffic 12 O'clock, 6 mi, 6 mi apart. Air carrier Y requests vector around traffic. Small aircraft X altitude stopped at 9500 ft. Small aircraft X reports air carrier Y in sight. Small aircraft X instructed to maintain visual separation. Air carrier Y advises climbing for TCASII alert. Air carrier Y climbs to 10500 ft, encroaching on ZTL, dalas sector airspace. Dalas sector notified.

Original NASA ASRS Text

Title: ACR Y TCASII RA CLB FROM ASSIGNED ALT. NON ADHERENCE TO ATC CLRNC UNAUTH PENETRATION OF CTR AIRSPACE. SEE AND AVOID CONCEPT WITH VFR SMA X. PLTDEV.

Narrative: SMA X DEPARTED CHA CLBING TO 14500 FT VFR SEBOUND. ACR Y TRANSITIONING AIRSPACE SE TO NW AT 10000 FT. ACR Y NOTIFIED OF TFC 12 O'CLOCK, 7 MI. SMA X NOTIFIED TFC 12 O'CLOCK, 6 MI, 6 MI APART. ACR Y REQUESTS VECTOR AROUND TFC. SMA X ALT STOPPED AT 9500 FT. SMA X RPTS ACR Y IN SIGHT. SMA X INSTRUCTED TO MAINTAIN VISUAL SEPARATION. ACR Y ADVISES CLBING FOR TCASII ALERT. ACR Y CLBS TO 10500 FT, ENCROACHING ON ZTL, DALAS SECTOR AIRSPACE. DALAS SECTOR NOTIFIED.

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.