Narrative:

August 2014 I was made aware of our possible non-compliance with aircraft maintenance manual (amm) procedures for grounding a/c for maintenance. I also questioned the state of the grounding points at the X and Y side terminal in ZZZ. The only thing I have heard back to this point is that at some point fueling determined that grounding a/c to earth was not required during fueling operations and at that time the testing and marking of the earth grounds stopped in ZZZ. I was also notified that due to tire conductivity; grounding for other maintenance tasks was not required. Per 737 amm 12-15-21 (oxygen servicing) step F 2: 'make sure the airplane is grounded correctly (static grounding; task 20-40-11)per 737 amm 20-40-11; 1.a (1): ' static grounding is not necessary if the airplane is parked for turnaround flight and no maintenance is to be done. Per 737 amm 20-40-11; 1.a (3) lists maintenance tasks that require grounding. Per 737 amm 20-40-11; 1(a).(4) 'when static grounding is recommended in a detailed procedure; the airplane must be statically grounded to a common; approved; identified ground or verified through conductive tires. The note after that step tells you how to verify tire conductivity. Per these steps above; I believe [that] on the B737 a/c; the only time that it is permissible to not ground the a/c is during a fueling operation when the tire conductivity has been verified and when the a/c is parked for a turnaround and no maintenance is being done. Also per this section there are no approved earth grounds at the X or Y terminal fingers at ZZZ for the B737 a/c because of the company disclosing that our [static] grounds are no longer marked or tested; and the amm calls for the a/c to be grounded to a common; approved; identified ground. Noncompliance issues.

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Original NASA ASRS Text

Title: A Lead Aircraft Maintenance Technician (AMT) was informed of a possible non-compliance with Aircraft Maintenance Manual (AMM) procedures involving Static grounding of aircraft to earth during maintenance. Lead Technician also notes the lack of approved; tested; certified and identifiable earth grounds at two Terminal fingers for B737 aircraft; may have contributed to the possible non-compliance issue.

Narrative: August 2014 I was made aware of our possible non-compliance with Aircraft Maintenance Manual (AMM) procedures for grounding a/c for maintenance. I also questioned the state of the grounding points at the X and Y side Terminal in ZZZ. The only thing I have heard back to this point is that at some point fueling determined that grounding a/c to earth was not required during fueling operations and at that time the testing and marking of the earth grounds stopped in ZZZ. I was also notified that due to tire conductivity; grounding for other maintenance tasks was not required. Per 737 AMM 12-15-21 (Oxygen Servicing) Step F 2: 'make sure the airplane is grounded correctly (static grounding; Task 20-40-11)Per 737 AMM 20-40-11; 1.A (1): ' static grounding is not necessary if the airplane is parked for turnaround flight and no maintenance is to be done. Per 737 AMM 20-40-11; 1.A (3) lists maintenance tasks that require grounding. Per 737 AMM 20-40-11; 1(A).(4) 'when static grounding is recommended in a detailed procedure; the airplane must be statically grounded to a common; approved; identified ground or verified through conductive tires. The Note after that step tells you how to verify tire conductivity. Per these steps above; I believe [that] on the B737 a/c; the only time that it is permissible to not ground the a/c is during a fueling operation when the tire conductivity has been verified and when the a/c is parked for a turnaround and no maintenance is being done. Also per this section there are no approved earth grounds at the X or Y Terminal fingers at ZZZ for the B737 a/c because of the company disclosing that our [Static] grounds are no longer marked or tested; and the AMM calls for the a/c to be grounded to a common; approved; identified ground. Noncompliance issues.

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.