REPORT Both pilots of an A320 fell asleep in the cockpit
for 28 minutes
Both pilots fall asleep on Batik Air Airbus A320 for 28 minutes in a
report published by Indonesian authorities.
On 25 January 2024, the Airbus A320 was
being operated as scheduled passenger flight from Soekarno-Hatta International
Airport (WIII), Jakarta to Halu Oleo Airport (WAWW), Kendari and return. The
aircraft was operated by two pilots and four flight attendants.
As the aircraft reached the cruising
altitude of 36,000 feet, both pilots took their headsets off and the cockpit
loudspeaker volume was increased. The PIC then asked permission to rest from
the SIC and was granted. A few seconds later, the PIC slept and the SIC then
took over the PIC duty as PM.
The PIC woke up and at 0122 UTC, asked
whether the SIC wanted to rest. The SIC responded that he did not want to rest.
Both pilots then had a non-related-duty conversation for about 30 seconds and
then the PIC continued to sleep.
Around 20 minutes later, the SIC
readback a Jakarta ACC instruction. A few moments later, the SIC then
inadvertently fell asleep. 12 minutes after the last recorded transmission from
the SIC, the Jakarta ACC asked BTK6723 how long the aircraft need to fly on the
current heading (250°). There was no reply from the pilots.
28 minutes after the last recorded
transmission from the SIC, the PIC woke up and was aware that the aircraft was
not in the correct flight path. The PIC then saw the SIC was sleeping and woke
him up. About the same time, the PIC responded to the call from another pilot
and Jakarta ACC. The PIC advised the Jakarta ACC that BTK6723 experienced radio
communication problem and currently the problem has been resolved. The
flight then continued and landed at Jakarta uneventfully.
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