SDR HALA2012011000013

Service difficulty report · Altimeter · Boeing 76733A

Difficulty date: January 10, 2012
Submitted: January 10, 2012
Operation: Air carrier
Aircraft: N580HA
Make and model: Boeing 76733A
Aircraft serial: 28140
Aircraft time: 37,760 hours, 7,070 cycles
System (JASC): 3416 · Altimeter, Barometric/Encoder
Part: Altimeter
Condition: Inaccurate
Stage of operation: CR
How discovered: O
Nature of condition: O
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

ETOPS SIGNIFICANT SYS - ALTIMETERS DIFFERENCE BETWEEN CAPT AND CO-PILOT IN RVSM 130' DIFFERENCE. IAW DISPATCH-ACFT FLT PLAN HAS FLT LEVELS FROM 37,000 FT TO 38,000 FT AT CRUISE. REF FIM CHART CHAPTER 34 FAULT CODE DIAGRAM ALTIMETER TOLERANCES FIG 6, SHEET 1. ALTIMETER DIFFERENCES WITHIN LIMITS. OK FOR SERVICE.

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