As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ETOPS SIGNIFICANT SYSTEM - F/O ALTIMETER READS 160' LOW WHEN LEVEL AT 36000'. F/O AIRSPEED ALSO LOW COMPARED TO CAPT AS .810 VS .802 IAW 269 VS 267. PERF PITOT SYS TEST ON CAPT AND F/O SYS PER AMM 34-11-00. OPS CK OK. BOTH SYSTEMS ARE WITHIN LIMITS. COMPLETED STEPS 2A-2N(6). 3-6-10. NEED TO CONTINUE STEPS 2.0(1) - 2.0(5). COMPLETED STEPS 2.0 "0"(1-5) OF M/M 34-11-00.