Maintenance technicians reported that while performing a test of the pitot/static system on an aircr...

Narrative:

I was assigned the task of 'drain flush and test pitot/static circuits' on aircraft X as outlined in job card #XXXX. I accomplished this task while working with technician B and lead technician at hangar X in ZZZ. We accomplished this task in accordance with the procedures found in the job card #XXXX. The job card failed to ensure that the mode south transponders were disabled preventing test altitudes from being transmitted.revise the job card procedures to include steps to prevent mode south transponders from transmitting test altitudes.[task was related to aircraft] storage [related procedures].

Original NASA ASRS Text

Title: Maintenance technicians reported that while performing a test of the pitot/static system on an aircraft; the job card failed to ensure the Mode S transponders were disabled.

Narrative: I was assigned the task of 'Drain Flush and Test Pitot/Static circuits' on Aircraft X as outlined in Job Card #XXXX. I accomplished this task while working with Technician B and Lead Technician at Hangar X in ZZZ. We accomplished this task in accordance with the procedures found in the Job Card #XXXX. The Job Card failed to ensure that the Mode S Transponders were disabled preventing test altitudes from being transmitted.Revise the Job Card procedures to include steps to prevent Mode S Transponders from transmitting test altitudes.[Task was related to aircraft] storage [related procedures].

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	1748229
Time
Date	202005
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Parked
Component
Aircraft Component	Transponder
Person 1
Function	Technician
Person 2
Function	Lead Technician
Qualification	Maintenance Powerplant Maintenance Airframe
Events
Anomaly	Deviation - Procedural Published Material / Policy

Maintenance technicians reported that while performing a test of the pitot/static system on an aircraft; the job card failed to ensure the mode south transponders were disabled.