A TRACON controller instructing a trainee observed the trainee allow an aircraft to fly below the mi...

Attributes
ACN	1727347
Time
Date	202002
Local Time Of Day	0001-0600
Place
Locale Reference	PSC.TRACON
State Reference	WA
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Small Aircraft
Operating Under FAR Part	Part 91
Flight Phase	Other Holding Pattern
Route In Use	Direct
Flight Plan	IFR
Person 1
Function	Approach Instructor
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 3.5
Person 2
Function	Approach
Qualification	Air Traffic Control Developmental
Events
Anomaly	ATC Issue All Types Inflight Event / Encounter CFTT / CFIT

Narrative:

I was the OJT instructor on the sector. Aircraft X requested pop up IFR and to hold. The trainee issued holding instructions (per pilot request) over the VOR on a radial. I heard it was the 310 degree radio but the pilot was actually requesting the 130 degree radial. After two turns in holding the developmental noticed the aircraft entering a 5700 foot minimum vectoring altitude(MVA) so he climbed the aircraft to 6000 feet. No further incident. The developmental is far along in hours and I was wanting to let him work the position unbothered so I was sitting and monitoring the adjacent scope. I wasn't worried about MVA because I heard 310 radial and that would keep the aircraft toward lower mvas. Expectation bias and hear back error on my part. I should have more vigilant involvement during training.

Original NASA ASRS Text

Title: A TRACON Controller instructing a trainee observed the trainee allow an aircraft to fly below the Minimum Vectoring Altitude.

Narrative: I was the OJT Instructor on the sector. Aircraft X requested pop up IFR and to hold. The trainee issued holding instructions (per pilot request) over the VOR on a radial. I heard it was the 310 degree radio but the pilot was actually requesting the 130 degree radial. After two turns in holding the developmental noticed the aircraft entering a 5700 foot Minimum Vectoring Altitude(MVA) so he climbed the aircraft to 6000 feet. No further incident. The developmental is far along in hours and I was wanting to let him work the position unbothered so I was sitting and monitoring the adjacent scope. I wasn't worried about MVA because I heard 310 radial and that would keep the aircraft toward lower MVAs. Expectation bias and hear back error on my part. I should have more vigilant involvement during training.

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.

A TRACON controller instructing a trainee observed the trainee allow an aircraft to fly below the minimum vectoring altitude.