Captain reported refusing an aircraft was caused by disagreement regarding compliance with AMM and MEL procedures. The aircraft's Six Pack System Caution Light would not stay installed due to broken and missing pieces.

2023-01 · NASA ASRS report 1964360

Date: 2023-01 · Aircraft: B737-800 · Phase: ground

Anomalies: aircraft-equipment-problem-critical|deviation-discrepancy-procedural-maintenance|deviation-discrepancy-procedural-published-material-policy|deviation-discrepancy-procedural-far

Synopsis

Captain reported refusing an aircraft was caused by disagreement regarding compliance with AMM and MEL procedures. The aircraft's Six Pack System Caution Light would not stay installed due to broken and missing pieces.

Narrative

Both myself and the FO (First Officer) were scheduled to work Aircraft X to ZZZ1. Upon arriving at the aircraft we found that the 'six pack' or 'Master Caution Reset' was missing from the FO side of the jet. It had come loose and fallen out of the panel. This was written up in the AML and when we arrived to preflight; Company Maintenance Personnel were on the aircraft looking for the part on the flight deck floor. I was informed that no parts existed at ZZZ. I was also; informed an aircraft was arriving from ZZZ2 which would the part could be borrowed from. When the ZZZ2 flight cleared customs the Mechanic advised me he had someone taking the part out. When the part was placed in our jet it was not secure and in fact it was loose enough that it would slide out. I informed the Mechanic this was not an adequate repair because; this part would slide out just as the original part did. He attempted to show me that the safety retaining clip on the right side of it was what held it in. I then showed the Mechanic that in fact that is not how it is secured be showing him the left side Master Caution Reset. I showed the Mechanic that it did not slide out easily. My FO had then pointed out that the socket was missing parts inside. The Mechanic was persistent to the point of calling his Supervisor who then came out and insisted that the plane was 'operating normally' I then told him if you clear the Master Caution with a faulty socket I will immediately write it up again. Shortly there after I called Dispatch and explained what was happening and asked why we were dispatching this jet with a faulty Master Caution system instead of the inbound ZZZ2 jet which we later were redispatched in; the socket and Master Caution reset worked fine. Ultimately we were reassigned to Aircraft Y which had been written up in ZZZ for a dent below the FO window. The mechanic cleared it as 'previously disclosed no maintenance action necessary' in the AML. I could not reference the damage log so I called Maintenance Control and read the referred item to Maintenance Control and he said that is for a dent down by the R1 door; nearly six to eight ft. away. I then told him get me a Mechanic to make the jet legal and safe. When the Mechanic showed up some words were spoken about the clearing write up trying to explain it; I said fix it or it does not fly. A Mechanic inspected the airframe correctly at this point and re-entered and cleared the write up post inspection. Something is wrong in ZZZ and it impacted the ZZZ3 operating crew 5 hours and 40 minutes and much exhausting banter to simply get things done correctly. In the end we were much later and the issue of fatigue was a player going into ZZZ4.Cuase - Policy and practice in ZZZ and fatigue.Suggestions - Not sure but; there is certainly and unsafe level of pilot pushing in ZZZ.

Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.

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