Jammed Collective Flashcards
If the COL has been jammed, what are your initial actions?
Check for FOD
FTR button
Tell ATC if in the CIRA
Does it matter which engine is slowed during jammed COL during HOGE?
No
You are low power with jammed collective, what can be done to climb/reduce RoD? (2)
- 75KIAS
- Stores jettison
During jammed collective on the hover, what are the three different options available to the crew and when would one be preferred to another?
- Suitable area directly below the aircraft —> Vertical descent in place using SLOW modes
- Large suitable area in front of aircraft (runway/fields) —> Termination with forward airspeed using SLOW modes
- No suitable area —> flyaway to a new landing area
You are HOGE, the only suitable landing area is directly below you when you get a jammed collective, what are your actions?
“Control malfunction - collective”
A - Maintain position, nil movement —> Relax on EEPs
N - Suitable landing site directly below
C - R/T —> MAYDAY
A - Jammed COL Cx —> EMERG Cx/LDG Cx/PWP
Select/deselect SLOW until hover IGE, select SLOW then EEPs shutoff on the ground
You are HOGE, with a large flat area to the front when you get a jammed collective, what are your actions?
“Control malfunction - collective”
A - Maintain position, nil movement —> Relax on EEPs
N - Suitable landing area on the nose
C - R/T —> MAYDAY
A - Jammed COL Cx —> EMERG Cx/LDG Cx/PWP
Prior to selecting SLOW accel to ETL (~20KIAS), this will reduce RoD when SLOW engaged, land via flat attitude RLDG @ETL
You are HOGE, you get a jammed collective, there are no safe landing sites anywhere nearby, what are your actions?
“Control malfunction - collective”
A - Maintain position, nil movement —> Relax on EEPs
N - No LDG site, must flyaway
C - R/T —> MAYDAY
A - COL Jammed FWD flight —> PWP
Fly IAW the standard T/O, complete boldface as req
During jammed collective in FWD flight, what are the three different options available to the crew and when would one be preferred to another?
LOW power - Aircraft is descending @75KIAS after stores released —> flared RLDG
MED power - RoD @ 30KIAS is greater than 300ft/min —> RLDG
HIGH power - RoD @30KIAS is less than 300ft/min —> SLOW mode used —> RLDG
How can the crew decelerate the aircraft from the level flight speed to 30KIAS?
- Deceleration climbing turn
- Steep turn
How is the deceleration climbing turn flown?
10ºNU, 30ºAoB, left/right as req
You are in flight when you get jammed collective, what are your initial actions?
“Control malfunction - collective”
- IAS for level flight (if descending set 75KIAS)
- Relax on EEPs
- FOD checks/AFCS disengage/Collective (assess movement)
Continued flight?
You have jammed collective, are at 75KIAS and are still descending, what are your actions to land?
“Continued flight not possible”
A - 75KIAS, stores release, AP2/AP1 - ON
N - Place VV on the best LDG site
C - MAYDAY
A - LDG Cx, EMERG Cx, PWP if able
Explain the process for a MED PWR landing with jammed COL?
- Adjust IAS for RoD between 300-500ft/min not below 30KIAS
- Flat attitude RLDG
- EEPs shutoff on the ground
Explain the process for a HIGH PWR landing with jammed COL?
- Adjust IAS for 30KIAS
- Select SLOW as req —> @30KTS select SUP/MAX/INT for RoD between 300-500ft/min
- Flat attitude RLDG
- EEPs shutoff on the ground
What is the hover jammed collective boldface:
- AUDIO OFF ………………………………… Select.
- ECP TRG mode ……………………………………. Select.
- ECP OEI Power SUP (TRG)…………………… Select.
- ECP ENG2 (or ENG1) SLOW…………………. Select. NR shall droop (not below 290 NR).
If not descending:
- ECP OEI Power MAX (TRG) ………………….. Select.
If still not descending:
- Collective OEI Power INT (TRG)……………. Select.
When landed:
- EMER ENG SHUTDOWN (E–1–14) ……………………
………………………………….. Perform (both engines).
