<< >> NASA ASRS Report 697113, May 2006

L30 controller described incident when aircraft was received from another sector; the assigned altitude missed and a near MVA violation occurred.

Attributes
ACN	697113
Time
Date	200605
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : l30.tracon
State Reference	NV
Altitude	msl single value : 9200
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	PC-12
Operating Under FAR Part	Part 91
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach controller : radar
Qualification	controller : radar
Experience	controller radar : 18 controller time certified in position1 : 3
ASRS Report	697113
Person 2
Affiliation	government : faa
Function	controller : approach controller : radar
Qualification	controller : radar
Experience	controller radar : 15 controller time certified in position1 : 3 controller time certified in position2 : 9 flight time total : 100
ASRS Report	697112
Events
Anomaly	non adherence : required legal separation non adherence : published procedure
Independent Detector	atc equipment : msaw other controllera other controllerb
Resolutory Action	flight crew : took evasive action
Consequence	faa : investigated
Miss Distance	horizontal : 12000 vertical : 500
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance

Narrative:

I had aircraft X on a vector to keep him in an 8500 ft MVA. I was working 'sat and gnt' sectors combined and handed the aircraft off to the dag sector. The dag controller turned the aircraft east into a 9500 ft MVA and the low altitude alarm sounded. He then climbed and turned the aircraft to a lower MVA. Supplemental information from acn 697112: on initial contact; aircraft X IFR to hnd was on a southeast heading and reported in at 10000 ft. I turned the aircraft to a 100 degree heading vector for visual approach to hnd airport. As I was scanning; I noticed aircraft X descending through 9500 ft. I asked his assigned altitude. He stated it was 8500 ft. He was in proximity of mount potosi which has a 9500 ft MVA. I immediately turned him right to heading 130 degrees and climbed him to 9500 ft. I did this just prior to low altitude alert going off. Upon review of tape; aircraft X reported in 10200 ft descending to 8500 ft and I missed it. The controller who gave me the handoff was decertified for not coordinating the heading and altitude.

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Original NASA ASRS Text

Title: L30 CTLR DESCRIBED INCIDENT WHEN ACFT WAS RECEIVED FROM ANOTHER SECTOR; THE ASSIGNED ALT MISSED AND A NEAR MVA VIOLATION OCCURRED.

Narrative: I HAD ACFT X ON A VECTOR TO KEEP HIM IN AN 8500 FT MVA. I WAS WORKING 'SAT AND GNT' SECTORS COMBINED AND HANDED THE ACFT OFF TO THE DAG SECTOR. THE DAG CTLR TURNED THE ACFT E INTO A 9500 FT MVA AND THE LOW ALT ALARM SOUNDED. HE THEN CLBED AND TURNED THE ACFT TO A LOWER MVA. SUPPLEMENTAL INFO FROM ACN 697112: ON INITIAL CONTACT; ACFT X IFR TO HND WAS ON A SE HDG AND RPTED IN AT 10000 FT. I TURNED THE ACFT TO A 100 DEG HDG VECTOR FOR VISUAL APCH TO HND ARPT. AS I WAS SCANNING; I NOTICED ACFT X DSNDING THROUGH 9500 FT. I ASKED HIS ASSIGNED ALT. HE STATED IT WAS 8500 FT. HE WAS IN PROX OF MOUNT POTOSI WHICH HAS A 9500 FT MVA. I IMMEDIATELY TURNED HIM R TO HDG 130 DEGS AND CLBED HIM TO 9500 FT. I DID THIS JUST PRIOR TO LOW ALT ALERT GOING OFF. UPON REVIEW OF TAPE; ACFT X RPTED IN 10200 FT DSNDING TO 8500 FT AND I MISSED IT. THE CTLR WHO GAVE ME THE HDOF WAS DECERTIFIED FOR NOT COORDINATING THE HDG AND ALT.

Data retrieved from NASA's ASRS site as of January 2009 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.