Flight instructor reported that while taxiing behind a falcon performing an engine run up; the airpl...

Narrative:

After a 1.1 hour pattern work flight with a student; the student had controls and was taxiing back from runway 35 via G; a; C - cross runway 23 (per ATC instructions). After the turn was made from alpha to charlie; we continued down charlie back to our parking location. While we were taxiing; we noticed a falcon with its engine cowls open sitting on the GA ramp; with two maintenance personnel 'working on the aircraft'. The falcon was pointed with the back of the engines facing the taxiway (C) at a 90 degree perpendicular angle. As we taxied past; our aircraft all of the sudden began a sharp turn towards the falcon (assuming from jet blast on our tail); and I took controls from the student. The aircraft went into a nose down attitude; with only the nose wheel and the right main wheel touching the ground. Close to a prop strike. I used the flight controls to keep the aircraft from flipping/prop striking; and we continued past the aircraft to our parking location after I recovered the aircraft. The maintenance personnel on the falcon were running the engines up on the falcon with no regard for other aircraft taxiing past; and no notice given to ATC that they would be running up blasting the taxiway. A post-flight inspection found no damage to the aircraft or propeller; the student however did hit his head while being 'tossed' by the falcon's jet blast. No visible injuries to the student; just shaken up a bit. To prevent a future incident like this; I would suggest that aircraft running up their engines at azo do not use the GA ramp pointed back towards the taxiway; and they find a different spot on the field where that risk is mitigated.

Original NASA ASRS Text

Title: Flight Instructor reported that while taxiing behind a Falcon performing an engine run up; the airplane encountered jet blast resulting in a loss of aircraft control.

Narrative: After a 1.1 hour pattern work flight with a student; the student had controls and was taxiing back from Runway 35 via G; A; C - Cross Runway 23 (Per ATC instructions). After the turn was made from Alpha to Charlie; we continued down Charlie back to our parking location. While we were taxiing; we noticed a Falcon with its engine cowls open sitting on the GA ramp; with two maintenance personnel 'working on the aircraft'. The Falcon was pointed with the back of the engines facing the taxiway (C) at a 90 degree perpendicular angle. As we taxied past; our aircraft all of the sudden began a sharp turn towards the Falcon (assuming from jet blast on our tail); and I took controls from the student. The aircraft went into a nose down attitude; with only the nose wheel and the right main wheel touching the ground. Close to a prop strike. I used the flight controls to keep the aircraft from flipping/prop striking; and we continued past the aircraft to our parking location after I recovered the aircraft. The maintenance personnel on the Falcon were running the engines up on the Falcon with no regard for other aircraft taxiing past; and no notice given to ATC that they would be running up blasting the taxiway. A post-flight inspection found no damage to the aircraft or propeller; the student however did hit his head while being 'tossed' by the Falcon's jet blast. No visible injuries to the student; just shaken up a bit. To prevent a future incident like this; I would suggest that aircraft running up their engines at AZO DO NOT use the GA ramp pointed back towards the taxiway; and they find a different spot on the field where that risk is mitigated.

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	1693870
Time
Date	201910
Local Time Of Day	1201-1800
Place
Locale Reference	AZO.Airport
State Reference	MI
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Small Aircraft High Wing 1 Eng Fixed Gear
Operating Under FAR Part	Part 91
Flight Phase	Taxi
Flight Plan	None
Aircraft 2
Make Model Name	Falcon 2000
Operating Under FAR Part	Part 91
Flight Phase	Parked
Flight Plan	None
Person 1
Function	Instructor
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Commercial Flight Crew Flight Instructor
Experience	Flight Crew Last 90 Days 100 Flight Crew Total 515 Flight Crew Type 350
Events
Anomaly	Conflict Ground Conflict Less Severe Deviation - Procedural Published Material / Policy Ground Event / Encounter Loss Of Aircraft Control

Flight instructor reported that while taxiing behind a falcon performing an engine run up; the airplane encountered jet blast resulting in a loss of aircraft control.