TRACON instructor and developmental reported a military aircraft that was issued holding instruction...

Narrative:

Aircraft X was a heavy aircraft that departed tys with intentions to hold at 5000. He was holding at a fix east of tys. He was instructed to hold southeast of the fix (VXV130006) using 5 mile legs and left turns. The holding fix should have been enough to avoid a 6;800 foot MVA by a few miles.aircraft X was nearing the MVA without showing signs of turning; so the developmental advised he start his turn toward the northeast. No response was given. I then keyed the mic and instructed to give a heading with a left turn to a heading of 360; again with no response. I gave the instruction 1 more time and got a response.I believe the aircraft was already in a turn to the right when he read back the left turn; however; I had not yet observed that turn on the radar scope. After he started his turn to the left; he briefly entered the 6;800 MVA.this was a special event as these aircraft rarely do procedures like this in our airspace. Aircraft X was trying to set up the aircraft for a flyover for a college football game. I have never seen this holding request before.after noting the issue; the dev re-issued the holding instructions; however issued 3 mile legs which kept the aircraft further away from the higher MVA. This approach worked.

Original NASA ASRS Text

Title: TRACON Instructor and Developmental reported a military aircraft that was issued holding instructions went past the turning point and entered an area of a higher MVA.

Narrative: Aircraft X was a heavy aircraft that departed TYS with intentions to hold at 5000. He was holding at a fix East of TYS. He was instructed to hold SE of the fix (VXV130006) using 5 mile legs and left turns. The holding fix should have been enough to avoid a 6;800 foot MVA by a few miles.Aircraft X was nearing the MVA without showing signs of turning; so the Developmental advised he start his turn toward the northeast. No response was given. I then keyed the mic and instructed to give a heading with a left turn to a heading of 360; again with no response. I gave the instruction 1 more time and got a response.I believe the aircraft was already in a turn to the right when he read back the left turn; however; I had not yet observed that turn on the radar scope. After he started his turn to the left; he briefly entered the 6;800 MVA.This was a special event as these aircraft rarely do procedures like this in our airspace. Aircraft X was trying to set up the aircraft for a flyover for a college football game. I have never seen this holding request before.After noting the issue; the Dev re-issued the holding instructions; however issued 3 mile legs which kept the aircraft further away from the higher MVA. This approach worked.

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.

Attributes
ACN	1592660
Time
Date	201811
Local Time Of Day	1801-2400
Place
Locale Reference	TYS.TRACON
State Reference	TN
Aircraft 1
Make Model Name	Stratotanker 135
Operating Under FAR Part	Part 91
Flight Phase	Other Holding Pattern
Flight Plan	IFR
Person 1
Function	Instructor Approach
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 1
Person 2
Function	Approach
Qualification	Air Traffic Control Developmental
Events
Anomaly	ATC Issue All Types Deviation - Procedural Clearance Inflight Event / Encounter CFTT / CFIT

TRACON instructor and developmental reported a military aircraft that was issued holding instructions went past the turning point and entered an area of a higher MVA.