Maintenance person reported a discrepancy between the aircraft maintenance manual and the aircraft p...

Narrative:

When pulling up the aircraft maintenance manual (amm); you find the circuit breakers listed for the task of removing and installing a tablet interface module (tim) assembly; respectively. The three listed circuit breakers are all on panel 121VU. The captain's tim is listed as K19; the first officer's (first officer) tim is listed as R40; and the aircraft interface device (aid) is listed as K20. When on the actual aircraft; these are not correct. The circuit breaker located on panel 121VU location K19 is labeled as 'first officer efb'. When pulling this circuit breaker; it does control the first officer tim. The circuit breaker located on panel 121VU location R40 is labeled as 'captain efb'. When pulling this circuit breaker; it does control the captain's tim. There is a blanking cap on panel 121VU; at location K20; where the 'aid' circuit breaker is supposed to be. I did go on to another airbus; to check if this anomaly was only on one aircraft; and unfortunately; it is not.suggested resolution: do a read and report of all airbus aircraft in the fleet; which have the tim units installed. If the same is present in all aircraft; make changes to the associated amms; and other manuals to show the correct locations; rather than doing a whole wiring change throughout the system.

Original NASA ASRS Text

Title: Maintenance person reported a discrepancy between the Aircraft Maintenance Manual and the aircraft panel labeling of the circuits breakers; for the Tablet Interface Module on the A320 fleet.

Narrative: When pulling up the Aircraft Maintenance Manual (AMM); you find the circuit breakers listed for the task of removing and installing a Tablet Interface Module (TIM) assembly; respectively. The three listed circuit breakers are all on panel 121VU. The Captain's TIM is listed as K19; the First Officer's (FO) TIM is listed as R40; and the Aircraft Interface Device (AID) is listed as K20. When on the actual aircraft; these are not correct. The circuit breaker located on panel 121VU location K19 is labeled as 'F/O EFB'. When pulling this circuit breaker; it does control the F/O TIM. The circuit breaker located on panel 121VU location R40 is labeled as 'CAPT EFB'. When pulling this circuit breaker; it does control the Captain's TIM. There is a blanking cap on panel 121VU; at location K20; where the 'AID' circuit breaker is supposed to be. I did go on to another Airbus; to check if this anomaly was only on one aircraft; and unfortunately; it is not.Suggested Resolution: Do a read and report of all Airbus aircraft in the fleet; which have the TIM units installed. If the same is present in all aircraft; make changes to the associated AMMs; and other Manuals to show the correct locations; rather than doing a whole wiring change throughout the system.

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	1519094
Time
Date	201802
Aircraft 1
Make Model Name	A320
Operating Under FAR Part	Part 121
Flight Phase	Parked
Flight Plan	IFR
Component
Aircraft Component	Circuit Breaker / Fuse / Thermocouple
Person 1
Function	Other / Unknown
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy

Maintenance person reported a discrepancy between the aircraft maintenance manual and the aircraft panel labeling of the circuits breakers; for the tablet interface module on the A320 fleet.