MBR
It has to do with MSN numbers. I have produced three set of MSNs. Only the first set has DC ESS availability with gear up and with gear down all communication lost. It also suggests landing Conf before gear down.
Ident.:PRO-ABN-24-X-NG01112
Applicable to: MSN 0199-0240, 0264
Ident.:PRO-ABN-24-X-00012547.0002001 / 24 JUN 13
64
LAND ASAP (AMBER)
L2Triggered, if DC BUS 1, DC BUS 2 andDC ESS BUS are lost. In addition, DC BAT BUS is lost.
L1EMER ELECPWR..................................................... ............................................................ MANON
L2Landing flaps must beestablished before landing gear extension.
The emergency generator supplies DC ESS BUS, as longas the landing gear is up.
But, DC BUS 1, DC BUS 2, and DC BAT BUS are still notsupplied.
Note: DC ESS BUS is lost atlanding gear extension.
Consequently, all means ofcommunications are lost since all ACPs are lost.
Ident.:PRO-ABN-24-X-NG01112
Applicable to: MSN 0557
Ident.:PRO-ABN-24-X-00012547.0003001 / 05 MAR 13
66
LAND ASAP (AMBER)
L2Triggered, if DC BUS 1, DC BUS 2 andDC ESS BUS are lost. In addition, DC BAT BUS is lost.
L1EMER ELECPWR..................................................... ............................................................ MANON
L2The emergency generator suppliesDC ESS BUS.
But, DC BUS 1, DC BUS 2, and DC BAT BUS are still notsupplied.
Ident.:PRO-ABN-24-X-NG01112
Applicable to: MSN 0976-1818
Ident.:PRO-ABN-24-X-00012547.0003001 / 05 MAR 13
68
LAND ASAP (AMBER)
L2Triggered, if DC BUS 1, DC BUS 2 andDC ESS BUS are lost. In addition, DC BAT BUS is lost.
L1EMER ELECPWR..................................................... ............................................................ MANON
L2The emergency generator suppliesDC ESS BUS.
But, DCBUS 1, DC BUS 2, and DC BAT BUS are still not supplied