LOT B767 1. nov. 2011

Grunnen til at jeg tar opp denne igjen, er videoen som er på nettet: http://tinyurl.com/a5rvzyv
Som du husker fra landingen, så var det en særdeles smooth gear-up landing. Flygerne ble prompte helter av Polen, dekorert med medaljer og sammenliknet med "Sully". Polen hadde et sterkt behov for å pense tankene vekk fra Polish Air Force Tu-154 og Smolenskulykken året før hvor flygeren fikk skylda. Da gikk jo halve statsapparatet med. Umiddelbart etter hendelsen sto følgende på trykk i fagpressen:

Preliminary inspection of the aircraft traced the central hydraulic system problem to a fluid leak from a damaged hose in the starboard main landing-gear.
But it also revealed that while the individual circuit-breaker for the alternate landing-gear extension motor was 'on', an overarching battery bus circuit-breaker - which protects several systems including the alternate landing-gear extension motor - was 'off'.
Polish investigation authority PKBWL said this 'off' position "was not recorded or indicated" either by the EICAS or the flight-data recorder of the 767.
Suspicion over the role of the circuit-breaker in the accident heightened during a test carried out as the aircraft was being recovered from the runway using cranes and air-bags.
After connecting a ground-power unit to the 767, and switching the battery bus circuit-breaker on, investigators successfully used the alternate landing-gear extension system to lower the undercarriage - enabling the aircraft to be towed to LOT's technical facilities.
"Functional tests of the entire electrical installation of the alternate landing-gear extension system are being conducted," said PKBWL.

Fra den offisielle rapporten:

Members of the State Commission on Aircraft Accident Investigation arrived at the

aerodrome about 15-20 minutes after the evacuation of passengers and crew. They carried out
the initial inspection of the aircraft and found that in the cockpit, on P6 panel, (helt nederst mot gulvet, men godt synlig) the circuit breaker C829 BAT BUS DISTR (on A1 position) was in the position „Off”, while the circuitbreaker C4248 LANDING GEAR - ALTN EXT MOTOR (on F6 position) was in the position
„On”. Records of on-board recorders (CVR - Cockpit Voice Recorder, FDR - Flight Data
Recorder and QAR - Quick Access Recorder) were protected and photographic
documentation was made.

LOT var kvikt ute med pressemelding om at ulykken skyldtes Hydraulic system Failure......

Vel, det er ikke langt fra Kapitol til den Tarpeiske klippe. Flygerne har neppe blitt fratatt medaljer og ordener vil jeg tro. De har kanskje fått regning på en airworthy B767 som aldri mer kom til å fly.......

Lesson learned: Check breakers