FIRE MN DK AFT in combi

[ASCTU744]

I'm getting a FIRE MN DK AFT in the combi, according to my sources the combi only has FIRE MN DECK.



This was during the volcanic ash reproduction

[John H Watson]

Airline option?

The Boeing FIM (Fault Isolation Manual) includes these Warning messages for the Combi, including:

FIRE MAIN DECK
FIRE MN DK MID
FIRE MN DK AFT

I don't know if it is related, but the combi was designed to be reconfigurable. Usually, the combi cargo area includes the aft area of Zone D and all of Zone E. I don't think the "all of Zone D" configuration was ever approved. Considering how small Zone D usually is, I don't think they would have created a FIRE MN DK FWD message simply for the front half of D zone. The front half of Zone D is main deck (fire) "Zones 1 & 2". The aft half of Zone D and all of E Zone includes main deck "Zones 3 ~ 6"

The FIM also mentions FIRE MN DK FWD, FIRE MAIN DECK 1 and FIRE MAIN DECK 2 warnings, but I don't know what aircraft this applies to. Freighter?

[ASCTU744]

It's weird, because FIM's tell me the same as your sources. But the FCOM's tell me the combi only has FIRE MAIN DECK.....

Both the FIM and FCOM are from KLM

[John H Watson]

I have some KLM engineer training notes which have this weird statement:

[The smoke detectors relay a signal to the flight deck] "This signal illuminates a light on the P5 pilot's overhead panel... [and] creates an EICAS messages, and activates MAWEA" 

The manual seems confused about whether the message/s are plural or singular. The message/s are not listed.

[John H Watson]

All rather confusing.