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Search: Posts Made By: JGtn
Showing results 1 to 14 of 14
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Forum: Rotorheads
10th Nov 2022, 00:37
Replies: 150
Views: 34,745
Posted By JGtn

The engine systems are powered thanks to their...

The engine systems are powered thanks to their own PMA (Permanent Magnetic Alternator) therefore remain in AUTO mode.
The engine mode switch FLIGHT or IDLE position being monitored by the EEC you...
Forum: Rotorheads
2nd Nov 2022, 01:51
Replies: 150
Views: 34,745
Posted By JGtn

You are correct, as long the engine is AUTO GOV...

You are correct, as long the engine is AUTO GOV you can move the ECL nothing happen on the engine power.
At reversion from AUTO to Manual, the power should not change more than 10% from its datum.
Forum: Rotorheads
2nd Nov 2022, 01:44
Replies: 150
Views: 34,745
Posted By JGtn

Within the FMM, as long as the engine is in AUTO...

Within the FMM, as long as the engine is in AUTO GOV, the ECL rode end is not in contact with the metering valve control arm, but it's following it closely.
At the switch over to MANUAL GOV, either...
Forum: Rotorheads
21st Oct 2022, 10:19
Replies: 150
Views: 34,745
Posted By JGtn

with the governor in aromatic, yes you can...

with the governor in aromatic, yes you can manipulate the ECL, but on a limited travel from Flight to Minimum, in order to be able to reach Off and shut down the engine at anytime. Now during the ECL...
Forum: Rotorheads
21st Oct 2022, 09:21
Replies: 150
Views: 34,745
Posted By JGtn

Loss of Essential buses

The preliminary report does not mention it as it concentrated on the collective issue, but it seems than the crew as lost the Essential buses.
If that the case the EEC remains in the last Governing...
Forum: Rotorheads
9th Oct 2022, 11:12
Replies: 150
Views: 34,745
Posted By JGtn

hi, you exactly right on all your comments...

hi,
you exactly right on all your comments except the last one, military pilots train themselves to recover a stuck collective, and it is exactly what has done that guy. He has done really good,...
Forum: Rotorheads
7th Oct 2022, 20:52
Replies: 150
Views: 34,745
Posted By JGtn

The AW139 did not become unflyable with no...

The AW139 did not become unflyable with no electrical on board, it will be unstable but.
It appears they had mechanical issue between the collective grip and the mixing unit,
Forum: Rotorheads
7th Oct 2022, 09:58
Replies: 150
Views: 34,745
Posted By JGtn

[Hi in the electrical fire procedure if you mix...

[Hi
in the electrical fire procedure if you mix up with switches, you can easily end up with no more electrical power on board, which means no more indication, even the electronic stand-by indicator...
Forum: Rotorheads
5th Oct 2022, 22:26
Replies: 150
Views: 34,745
Posted By JGtn

The PT6 engine installed on the AW139 is EEC...

The PT6 engine installed on the AW139 is EEC controlled.
Computer control in normal operation AUTO GOVerning mode
Manual control, thanks to an ECL (Engine Control Lever), in back-up operation...
Forum: Rotorheads
5th Oct 2022, 22:06
Replies: 150
Views: 34,745
Posted By JGtn

There is no reason for the EEC reverting to...

There is no reason for the EEC reverting to manual when you loose the Essential buses. They are powered thanks to an engine driven alternator, the so called PMA (Permanent Magnetic Alternator)

The...
Forum: Rotorheads
29th Sep 2022, 04:20
Replies: 150
Views: 34,745
Posted By JGtn

That a very good comment, in dead. The...

That a very good comment, in dead.
The Electrical fire/smoke procedure ask you to segregate the power source to the Essentials in order to determine which source is feeding the Ess buses, powering...
Forum: Rotorheads
8th Jul 2019, 00:06
Replies: 548
Views: 513,073
Posted By JGtn

On AW139, the Fly Away kicks in only if a...

On AW139, the Fly Away kicks in only if a collective axe FD mode is selected and coupled.
Forum: Rotorheads
7th Jul 2019, 23:46
Replies: 548
Views: 513,073
Posted By JGtn

AW139 floats deployement

On the AW139, for the floats to deploy automatically or manually, the system has to be armed. When OFF the floats does not deploy.

The automatic operation will occur at ditching thanks to immersed...
Forum: Rotorheads
24th Jun 2019, 00:02
Replies: 51
Views: 38,221
Posted By JGtn

90 degree bank “due to turbulence” that a severe...

90 degree bank “due to turbulence” that a severe one...
Unless keeping that attitude for few seconds, but the aircraft isn’t an aerobatic one, there no reason here to ran out of fuel.

Further...
Showing results 1 to 14 of 14


 
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