I'm new to this forum. I don't actually own an Arrow, but I rent one consistantly (5 days a week) to finish Commercial/CFI training.
Intermittently the right side toe brake goes to the firewall, and takes several pumps to return pressure. The right side brake sometimes feels spongy, and sometimes not. The pedal goes to the floor under light/moderate braking, but not when they are applied with more force. Applying the parking brake causes both calipers to apply evenly, and the left side always operates correctly. This has been occuring more and more frequently, and under heavier brake loads. The flight school's A&P has bled the brakes several times and returns the aircraft to service, however my trust that the brakes will operate correctly is dwindling quickly.
The A&P seems convinced that there is still air in the system (common on all Pipers, i know), but I am beginning to suspect the Rside master cylinder has bad seals...Especially considering the intermittent nature of the problem. I am able to replicate the condition consistantly and repeatedly. After showing the A&P what actually happens with him in the aircraft, he told me that 'You don't need light braking' and that he would be returning the A/C to service...again.
I am in the last 20 hrs of commercial training, and the next closest 141 school is more than 75nm away, so changing flight school for the time being is not an option. Any help/suggestions regarding how to get the A&P to dig deeper or what to do next would be greatly appreciated.
Intermittently the right side toe brake goes to the firewall, and takes several pumps to return pressure. The right side brake sometimes feels spongy, and sometimes not. The pedal goes to the floor under light/moderate braking, but not when they are applied with more force. Applying the parking brake causes both calipers to apply evenly, and the left side always operates correctly. This has been occuring more and more frequently, and under heavier brake loads. The flight school's A&P has bled the brakes several times and returns the aircraft to service, however my trust that the brakes will operate correctly is dwindling quickly.
The A&P seems convinced that there is still air in the system (common on all Pipers, i know), but I am beginning to suspect the Rside master cylinder has bad seals...Especially considering the intermittent nature of the problem. I am able to replicate the condition consistantly and repeatedly. After showing the A&P what actually happens with him in the aircraft, he told me that 'You don't need light braking' and that he would be returning the A/C to service...again.
I am in the last 20 hrs of commercial training, and the next closest 141 school is more than 75nm away, so changing flight school for the time being is not an option. Any help/suggestions regarding how to get the A&P to dig deeper or what to do next would be greatly appreciated.
