Re: Decompression!

John W. Williams (jwwda20_at_flash.net)
Sat, 9 Jan 1999 10:31:36 +0000


According to the operating cabin crew on that flight, during service
time they
suddenly heard the public address command from Capt. "Cabin crew,
prepare for
emer. ??????.". The cabin crew did not recognized the last word, some
thought it
was "exit" while some thought it was "descent". At that moment all cabin
crew were
so blur and dazzling that they didn't realize that they were going to
experience a
slow decompression but rather some kind of emergency. However they all
pushed all
........snip............
One of the single most important aspects of effective crew
interaction is CLEAR and unambiguous communication. It's every
crewmember's responsibility to assure this occurs, whether he/she is
a flight deck crewmember or cabin crewmember. If the chief purser,
in this case, was not clear on the thumbs-down signal he/she should
have querried the pilot crewmember for additional clarification, as
it might have directly effected the action(s) that the rest of the
cabin crew would (or could) take to insure passenger safety.

In the case you describe, it appears there was sufficient time &
opportunity for additional query/comment.

.......snip.........
is the meaning of thumb down, something bad or something fatal. About 5
mins later
of the capt. command and just before the cabin crew would like to take a
seat, all
the masks dropped and that was the time they were aware of decompression

.........snip......
If the flight crew waited as long as 5 minutes before telling the
cabin crew to take their seats, it indicates to me that there was
likely sufficient time to communicate much more clearly with the
cabin crewmembers as to the nature of the abnormal/emergency that was
in progress.

After the above incident, those cabin crew reported the communication
between
flight deck and cabin was not enough. They claimed that only one very
short but
not informative command "Cabin crew, prepare for emer. ?????? (might be
descent)"
which was not taught in the cabin crew safety training. I wondered what
would the
other airline's pilots normally do in a similar case in which
decompression is
known in advance and does not occur suddenly. In addition, a
controllable descent
could be performed by the pilots. Will the pilots normally give some
detailed
information to cabin staff or just a command. Unless the command is
universally
understood or being taught in the training otherwise I thought a
physical approach
between flight deck and cabin staff is necessary for sharing critical
information.

I would hope that this airline has evaluated the crew's actions and
taken appropriate steps to clarify and correct their company's
operations procedures & training program(s) to address this apparent
deficiency in crew communication during high-workload periods of
flight.

.
.
John W. Williams
http://www.flash.net/~jwwda20
ICQ# 3543301
PGP Public Key- http://www.flash.net/~jwwda20/pgp.html