Blade Fold/Unfold and Wing Stow (BFWS) Procedures

Flight Ready to Full Stow

1. Engine Control Levers – Check OFF

2. Nr – Check 0%

3. Rotor Brake – OFF

4. Battery – Check ON

5. APU – RUN/Engage

6. HYD Pressure – Check NORMAL

7. AREA – CLEAR

8. MFD -> SYST -> BFWS – SET

9. FLT RDY – Verify white with *

10. FULL STOW – Select

11. ROTOR LOCK – Select on MFD, verify white with *

12. Observe:

    1. NAC Positioned to 90 deg

    2. Proprotor blades index and lock

    3. Left and right blades fold

    4. Flaps position to 0 deg

    5. Nacelles lower

    6. Wing lockpin retraction

    7. Wing Stow

13. FULL STOW – Verify white with *

Full Stow to Flight Ready

1. Engine Control Levers – Check OFF

2. Nr – Check 0%

3. Rotor Brake – OFF

4. Battery – Check ON

5. APU – RUN/Engage

6. HYD Pressure – Check NORMAL

7. AREA – CLEAR

8. MFD -> SYST -> BFWS – SET

9. FULL STOW – Verify white with *

10. FLT RDY – Select

11. ROTOR LOCK – Select on MFD, verify white with *

12. Observe:

    1. Flaps positioned to 0 deg

    2. Wing lockpin retraction

    3. Wing unstow

    4. NAC raise to 90 deg

    5. Wing lockpin extension

    6. Blades unfold

13. FLT RDY – Verify white with *

14. ROTOR LOCK – Deselect on MFD, verify green

Flight Ready to Fold Horizontal

1. Engine Control Levers – Check OFF

2. Nr – Check 0%

3. Rotor Brake – OFF

4. Battery – Check ON

5. APU – RUN/Engage

6. HYD Pressure – Check NORMAL

7. AREA – CLEAR

8. MFD -> SYST -> BFWS – SET

9. FLT RDY – Verify white with *

10. FOLD HORIZ – Select

11. ROTOR LOCK – Select on MFD, verify white with *

12. Observe:

    1. NAC Positioned to 90 deg

    2. Proprotor blades index and lock

    3. Left and right blades fold

    4. Flaps position to 0 deg

    5. Nacelles lower

13. FOLD HORIZ – Verify white with *