DEC/EDECU improves transient droop compensation how?
DEC/EDECU rec’s signals from NR and collective and are compared with NP and Q signals. A priority signal is sent to trim the torque motor in the HMU to compensate for the demand.
How does the DEC limit TGT?
DEC commands HMU to limit fuel when TGT reaches it’s limiting value.
DE= TGT 879 +-9 Contingency= 903 +-9
when EDECU limits TGT? (at 2.5 contingency)
- NP below 96%
- Greater than 3% droop between reference NP and actual NP.
- Greater than 5% per second NP droop rate exists and NP less or equal to NP reference speed
(note: edecu not dependent on Q below 50%)
DE= TGT 879 +-9 Contingency= 903 +-9
what are DEC/EDECU fault codes?
how are they displayed?
- Failure on a selected input signal will display Q code.
- 4seconds on, 2 seconds off on MFD
Controls and functions of ICS panel ICS VOX HOT MIC CALL RMT BU ICU status light
-interface comm radios, nav radios, and intercom.
-ICS: default mode after initialize of ICS
-VOX: voice keying
-HOT MIC:constant keying of ICS interphone.
-CALL: overrides all other interphone comms at all stations exc. warnings and alerts.
-RMT: Enables RAD SEL on collective for radios and selections
BU:bypasses ICS in a degraded analog mode.
ICS status light: link of ICS and ICU broken
procedures for adjusting VOX
- press VOX 2 seconds-VOX light flashes
- Adjust VOX by MVOL control
if you go IIMC, do you have to inform CDR?
no unless violation of:
- FAA
- ICAO (inl’ civil aviation organization)
- Host nation
when operator/crew member check list used?
shall, should may?
from preflight through leaving A/C.
- Shall: mandatory
- Should: preferred
- May: acceptable method.
