Ive seen so many posts and YT videos about how to start up the ATR 72 in hotel mode by by-passing so called software bugs. Im confused. Order of button pressing being a key issue
Can anyone advised a simple procedure for achieving start up and proper unrotation and then rotation on No2 engine followed by No 1 full startup? Much appreciated.
Thankyou
Ive watched these and in my case i can start hotel mode
using the quick click method on aux hyd pump and by starting eng 2 in hotel but keep at feather, then eng 1 fully,then engage and spool up eng 2 to fully.
Conditions to set/release prop brake
• In-flight, the propeller brake is never engaged.
• Following landing, A/C on ground, one of the conditions for propeller brake engagement
is fullfilled.
• While taxiing, the gust lock is selected ON and Engine 1 is shut down. Gust lock ON is
the third condition for propeller brake engagement.
• When A/C is parked, Engine 2 propeller is feathered. The ACW generator is lost because
the NP<66%. Blue and Green Hydraulic pumps are lost.
• The pressure drop causes the DC AUX pump to start automatically, the shut-off valve to
open and a pressure to be applied to the propeller brake.
• When the pressure is detected correct, the READY green light illuminates: This is the
last condition to operate the propeller brake.
• Selecting the PROP BRAKE control switch to ON provides a control signal to the
propeller brake.
• This causes the UNLOCK red light to illuminate.
• As the propeller brake reaches the locked ON position, UNLOCK red light extinguishes.
The PROP BRK light illuminates on the PROP BRAKE control panel and the EWD.
• 6 seconds following propeller brake engagement, the control signal to the propeller
brake is removed.
• When the AUX pump stops automatically, the shut-off valve is commanded to close and
the READY green light extinguishes.
• To release the propeller brake, the HYD AUX pump switch pushbutton is pressed. DC
power is provided and the HYD AUX pump starts for 30 seconds.
• When the pressure is correct, the shut-off valve opens, the READY green light
illuminates and pressure is applied to the propeller brake.
• The propeller brake can be released by selecting the PROP BRAKE switch to OFF (release
operation not shown).
To summarize, PROP BRAKE engagement/release conditions are:
• A/C on ground,
• GUST Lock ON,
• Condition Lever 2 at FTR or Fuel S/O,
• Blue hydraulic pressure available,
• Fire handle 2 not pulled.
Here IRL training procedure to start in H/M
To set blue hyd pressure on ground without ACW
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Thankyou on behalf of everyone reading this most thorough explanation.
Very much appreciated Sir.
Here’s what we get with current 1.33.8.0, compared to this British Avgeek video on Apr 27, 2023 : https://www.youtube.com/watch?v=IvBkbmUKwyw
Current 1.33.8.0 on left side and BRT-AVGK part on right side
and after having switched PROP BRAKE to ON
Why do we see differences on buttons status/lights and what is the meaning/reason ? (Notice PROP BRAKE is displaying both READY status in green and PROP BRK status in blue at the same time, among all other differences)