SDR DALA1133381818

Service difficulty report · Altimeter · Boeing 767432ER

Difficulty date: May 11, 2011
Submitted: May 12, 2011
Operation: Air carrier
Aircraft: N842MH
Make and model: Boeing 767432ER
Aircraft serial: 29715
Aircraft time: 36,996 hours, 8,016 cycles
System (JASC): 3416 · Altimeter, Barometric/Encoder
Part: Altimeter
Condition: Inaccurate
Location: Cockpit
Stage of operation: CL
How discovered: O
Nature of condition: N
Precautionary procedure: A

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

What was found

AIRCRAFT 1818, ON INITIAL CLIMB OUT OF LHR ENROUTE TO MIA, THE CAPTAINS ALTIMETER DISPLAYED ERRONEOUS ALTITUDE INFORMATION, FLUCTUATING 250 FEET AT ALTITUDE. AN AIR TURN BACK WAS ACCOMPLISHED. FORWARDED TO MCO AND PLACARDED PER MEL 34-26-01A AND FOLLOWED MEL PROCEDURES. REMOVED AND REPLACED THE LEFT ADIRU PER AMM. ADDITIONALLY, REMOVED AND REPLACED THE CAPTAINS ADM LEFT ADIRU STATIC PRESSURE AND PITOT PRESSURE PER AMM. MCO AND PLACARD REMOVED. AIRCRAFT OK FOR SERVICE.