View Full Version : A330 Q - REV THR with RAT?
grrowler
29th May 2014, 06:59
Is there a scenario where the RAT could be powering the EMER GEN and yet you would have REV available on landing?
Natstrackalpha
29th May 2014, 13:16
LOST SYSTEMS WITH EMERGEN RUNNINNG
F/CTRL = ALT LAW
PRIM 2 + 3 (remaining is PRIM 1, SEC 1 and SEC 2)
RA 1 + 2
AP 2
VHF 2 + 3
Half s poilers Reversers
ADR 2
CAT 2
R rain repellent
DME 2
VOR 2 (VOR 1 and ADF 1 are only on the DDRMI)
GPS
2 RMP
2 ADF
2 ATC 2Selcal
RADAR 2
PFD 2
ND 2R
FMGCR MCDU
Lower ECAM screen
Pitch trim
Rudder trim
R windshield anti-ice
R landing light
Manual pressurisation control
Nose wheel steering
Most fuel pumps
IR 2 only runs for 5 more minutes
The AP drops out but AP 1 may be re-engaged
FD’s may or may not be available.
sonicbum
29th May 2014, 14:40
Is there a scenario where the RAT could be powering the EMER GEN and yet you would have REV available on landing?
Hi,
REV inop as per the system remaining table on QRH (Emer gen powered by the RAT). Since the RAT will automatically deploy in case of both engine failure or loss of G+B or G+Y then you should still have REV 2 or 1 according to the failure.
grrowler
30th May 2014, 10:24
Thanks for the responses.
If I understand correctly, the EMER GEN operates off the G HYD when the main gens fail and the RAT, as stated above, deploys with dual engine failure or loss of G + B/Y.
So in order to have EMER GEN on the RAT and REV (both) available it would require all main GENs to fail along with low pressure on G with manual deployment of the RAT. Is that right?
Sorry for the strange question, just to do with a tech exam.
sonicbum
30th May 2014, 10:29
Thanks for the responses.
If I understand correctly, the EMER GEN operates off the G HYD when the main gens fail and the RAT, as stated above, deploys with dual engine failure or loss of G + B/Y.
So in order to have EMER GEN on the RAT and REV (both) available it would require all main GENs to fail along with low pressure on G with manual deployment of the RAT. Is that right?
Sorry for the strange question, just to do with a tech exam.
Sounds right to me, can't really see any other options.