Btv TRACON controller reported that an aircraft being vectored at the MVA was not able to maintain a...

Attributes
ACN	1425114
Time
Date	201702
Local Time Of Day	1801-2400
Place
Locale Reference	BTV.TRACON
State Reference	VT
Environment
Light	Night
Aircraft 1
Make Model Name	Small Aircraft High Wing 1 Eng Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	Descent
Flight Plan	IFR
Person 1
Function	Approach
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 4
Events
Anomaly	ATC Issue All Types Airspace Violation All Types Deviation - Altitude Excursion From Assigned Altitude Deviation - Track / Heading All Types Inflight Event / Encounter Weather / Turbulence Inflight Event / Encounter CFTT / CFIT

Narrative:

Aircraft X entered btv radar east airspace from the west at 9000 ft. I informed the pilot to advise me of any approach request he might have and to descend and maintain 7000. Aircraft X requested lower altitude after a few minutes due to light ice accumulating. I then gave him the MVA altitude of 6500. I noticed he was not able to maintain his altitude and I gave him a further descent and a vector away from terrain depicted on the eovm (emergency obstruction video map). I then noticed aircraft X was turning towards terrain northwest bound and instructed him to fly northeast bound on a heading of 040 and asked 'how he was doing'. Aircraft X was able to get below the clouds and out of icing conditions away from terrain shortly thereafter.

Original NASA ASRS Text

Title: BTV TRACON Controller reported that an aircraft being vectored at the MVA was not able to maintain altitude due to icing.

Narrative: Aircraft X entered BTV radar east airspace from the west at 9000 ft. I informed the pilot to advise me of any approach request he might have and to descend and maintain 7000. Aircraft X requested lower altitude after a few minutes due to light ice accumulating. I then gave him the MVA altitude of 6500. I noticed he was not able to maintain his altitude and I gave him a further descent and a vector away from terrain depicted on the EOVM (Emergency Obstruction Video Map). I then noticed Aircraft X was turning towards terrain northwest bound and instructed him to fly northeast bound on a heading of 040 and asked 'how he was doing'. Aircraft X was able to get below the clouds and out of icing conditions away from terrain shortly thereafter.

Data retrieved from NASA's ASRS site 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.

Btv TRACON controller reported that an aircraft being vectored at the MVA was not able to maintain altitude due to icing.