In response to FAA audit of nonconforming brake lines. As Per owner's request and this operator's convenience:
1. Inspected left and right brake lines P/N 0400311-108 and 0400311-109 for conformance.
2. Removed L/R brake lines assembly. Replaced with rigid tubing P/N 5052-0, installed sleeve P/N P612392 and required B nut P/N AN818-3D. Serviced brake system with MIL-5606 as required. Bled brakes, performed operational and leak check as required.
3. Brake system is ok for normal operation.
All maintenance performed on this Aircraft was conducted in reference to Cessna Service Manual 172 Series and Federal Aviation Administration AC 43.1B section 2 and is approved for return to service with respect to the work performed.