Exterior Preflight Inspection

Gulfstream GVII

Eddie sez:

This is the "official" exterior preflight inspection, the one we pilots are supposed to do. You don't have to open the gear doors or enter the aft equipment bay. There is an expanded checklist that does these things in the AOM, §07-01-10. So the question is when do you need to do the expanded checklist? I asked the Gulfstream GVII program manager (who carries the job title of "Senior Experimental Test Pilot") and was told that only if you didn't trust the mechanic or had been on the road for a while. He said he doesn't think the expanded checklist is needed for a trip where you are on the road for a few days. I asked "what about a few weeks?" He said, "you really don't need to do it then either." I think we might adopt the exapnded checklist as a first flight of the month check. Since we will so rarely do them, I am guessing we'll need to have the checklist in hand.

Everything here is from the references shown below, with a few comments in an alternate color.

Last revision:

2020-03-13

Exterior Preflight Inspection

[AFM, §02-01-20] Exterior Preflight Inspection

55. MED Emergency Open Button . . . Unlocked

Wait, start with step 55? Yes, you won't be able to later on.

images

Photo: 55. MED Emergency Open Button . . . Shown locked
Click photo for a larger image

The lock needs to be unlocked for flight. They say you should always do this on the first flight of the day as "the only test of the eBatt." I am not convinced this is true, but I will grant this is the only test of this particular switch and that this is the first switch rescuers will use. So you might as well test it.

1. Ground Service Panel . . . Switches OFF / Door Secure / Unlocked

images

Photo: 1. Ground Service Panel . . . Switches OFF / Door Secure / Unlocked
Click photo for a larger image

2. Emergency LDG Gear Extension Bottle . . . Verify 3000 PSI.

images

Photo: 2. Emergency LDG Gear Extension Bottle . . . Verify 3000 PSI
Click photo for a larger image

3. NWS Unit Overtravel Indicator . . . Check

images

Photo: 3. NWS Unit Overtravel Indicator . . . Check
Click photo for a larger image

4. NLG Down-Lock Springs . . . Check

While you don't have to reset the uplocks if they are in the wrong position, you should make sure the springs attached to them are present.

images

Photo: 4. NLG Down-Lock Springs . . . Check
Click photo for a larger image

5. Taxi Lights / NLG Tires . . . Check

I've heard that a good technique for checking strut extension is "1-3-5," meaning the nose strut should be between 1-3" and the mains should be between 3-5" -- I'm not sure where this comes from.

images

Photo: 5. Taxi Lights / NLG Tires . . . Check
Click photo for a larger image

6. Ice Detection Probes . . . Check

images

Photo: 6. Ice Detection Probes . . . Check
Click photo for a larger image

7. Air Data / TAT Probes . . . Check

images

Photo: 7. Air Data / TAT Probes . . . Check

Note: the air data probes are shown with flags on them, the TAT probes are just below.
Click photo for a larger image

images

Photo: 7. Air data probe example

Note: An example air data probe (one of four)
Click photo for a larger image

images

Photo: 7. TAT probe example

Note: An example TAT probe (one of two)
Click photo for a larger image

8. NLG Torque Link . . . Pinned / Saftied

When "put to bed" overnight, the NLG torque link is normally unpinned and the steering link pin is secured by its wire to the nose TPMS upper dust cover. You will need to remove that dust cover to free up the wire and remove the steering link pin.

images

Photo: The NLG Torque Link unpinned, as normally stored
Click photo for a larger image

The first step is to lift the steering link scissors to line up with its mating arm. If the arm doesn't line up just right, move the tires left or right to make this happen. This was difficult to do in earlier Gulfstreams and many of us resorted to pushing and pulling the taxi light. This is unncessary with this airplane, the nosewheel is easily moved to align the scissors link.

The second step is to insert the steering link pin. Then place the wire onto the TPMS cannon plug.

images

Photo: The steering link secured
Click photo for a larger image

You will need to remove the TPMS wire from its storage position and move it up to the upper position.

images

Photo: The TPMS wire in its storage position.
Click photo for a larger image

Notice there is a dust cover below the storage position mounted horizonntally. That dust cover must be placed over the vertical plug to prevent water from pooling in it.

images

Photo: Lower TPMS dust cover
Click photo for a larger image

Finally, install the safety wire on the right side of the steering link pin.

images

Photo: NLG torque link saftied
Click photo for a larger image

9. NLG Safety Pin . . . Remove

The pin should remove easily, if you feel any resistance stop and investigate.

images

Photo: 9. NLG Safety Pin . . . Remove
Click photo for a larger image

10. PRV / TROV . . . Clear / Check

images

Photo: 10. PRV / TROV . . . Clear / Check
Click photo for a larger image

11. PRV Vortex Generators (4) . . . Check

images

Photo: 11. PRV Vortex Generators (4) . . . Check
Click photo for a larger image

12. Oxygen System Overboard Discharge Disk . . . Intact

images

Photo: 12. Oxygen System Overboard Discharge Disk . . . Intact
Click photo for a larger image

13. Landing Gear Control Maintenance Panel . . . Check

images

Photo: 13. Landing Gear Control Maintenance Panel . . . Check
Click photo for a larger image

14. PRV Static Ports . . . Check

images

Photo: 14. PRV Static Ports . . . Check
Click photo for a larger image

15. Antennas . . . Check

images

Photo: 15. Antennas . . . Check
Click photo for a larger image

16. Wing-to-Body Fairing Inlet Vents . . . Check

images

Photo: 16. Wing-to-Body Fairing Inlet Vents . . . Check
Click photo for a larger image

17. Right Landing Light . . Check

images

Photo: 17. Right Landing Light . . Check
Click photo for a larger image

18. Right Window Emergency Releases / Windows . . . Secure

images

Photo: 18. Right Window Emergency Releases / Windows . . . Secure
Click photo for a larger image

19. Right Wing Leading Edge . . . Check

images

Photo: 19. Right Wing Leading Edge . . . Check
Click photo for a larger image

20. Right Fuel Tank Vent . . . Check

images

Photo: 20. Right Fuel Tank Vent . . . Check
Click photo for a larger image

21. Right Wing Equipment Bay Vent . . . Check

images

Photo: 21. Right Wing Equipment Bay Vent . . . Check
Click photo for a larger image

22. Right Leading Edge Wing Tip Vent . . . Check

images

Photo: 22. Right Leading Edge Wing Tip Vent . . . Check
Click photo for a larger image

23. Right Wing NAV / Strobe / Wingtip Lights . . . Check

images

Photo: 23. Right Wing NAV / Strobe / Wingtip Lights . . . Check
Click photo for a larger image

24. Right Winglet . . . Check

images

Photo: 24. Right Winglet . . . Check
Click photo for a larger image

25. Static Wicks (3) . . . Check

images

Photo: 25. Static Wicks (3) . . . Check
Click photo for a larger image

26. Right Wing Aileron / Spoilers / Flaps . . . Check

images

Photo: 26. Right Wing Aileron / Spoilers / Flaps . . . Check
Click photo for a larger image

27. Right MLG Wheel Well Compartment . . . Check

While you don't have to reset the uplocks if they are in the wrong position, you should make sure the springs attached to them are present.

images

Photo: 27. Right MLG Wheel Well Compartment . . . Check
Click photo for a larger image

28. Right MLG Tires . . . Check

I've heard that a good technique for checking strut extension is "1-3-5," meaning the nose strut should be between 1-3" and the mains should be between 3-5" -- I'm not sure where this comes from.

images

Photo: 28. Right MLG Tires . . . Check
Click photo for a larger image

29. Right MLG Safety Pin . . . Remove

images

Photo: 29. Right MLG Safety Pin . . . Remove
Click photo for a larger image

30. Beacon . . . Check

images

Photo: 30. Beacon . . . Check
Click photo for a larger image

31. Wing-to-body Fairing Exhaust Vents . . . Check

images

Photo: 31. Wing-to-body Fairing Exhaust Vents . . . Check
Click photo for a larger image

32. Right Engine Cowl / Access Doors / Vents / Exhausts . . . Check

images

Photo: 32. Right Engine Cowl / Access Doors / Vents / Exhausts . . . Check
Click photo for a larger image

33. APU Exhaust . . . Check

images

Photo: 33. APU Exhaust . . . Check
Click photo for a larger image

34. Rudder . . . Check

images

Photo: 34. Rudder . . . Check
Click photo for a larger image

35. Tailcone . . . Check

images

Photo: 35. Tailcone . . . Check
Click photo for a larger image

36. Vertical / Horizontal Leading Edges . . . Check

images

Photo: 36. Vertical / Horizontal Leading Edges . . . Check
Click photo for a larger image

37. Horizontal Stabilizer / Elevators . . . Check

images

Photo: 37. Horizontal Stabilizer / Elevators . . . Check
Click photo for a larger image

38. Tail Navigation / Strobe Light Condition . . . Check

images

Photo: 38. Tail Navigation / Strobe Light Condition . . . Check
Click photo for a larger image

39. Static Wicks (8) . . . Check

Three on each side of the trail edge of the elevators and horizontal stabiler, one on the upper tail cone and one on the lower tail cone.

images

Photo: 39. Static Wicks (3) . . . Check
Click photo for a larger image

40. Left Engine Cowl / Access Doors / Vents / Exhausts . . . Check

images

Photo: 40. Left Engine Cowl / Access Doors / Vents / Exhausts . . . Check
Click photo for a larger image

41. Left MLG Wheel Well Compartment . . . Check

While you don't have to reset the uplocks if they are in the wrong position, you should make sure the springs attached to them are present.

images

Photo: 41. Left MLG Wheel Well Compartment . . . Check
Click photo for a larger image

42. Left MLG Tires . . . Check

I've heard that a good technique for checking strut extension is "1-3-5," meaning the nose strut should be between 1-3" and the mains should be between 3-5" -- I'm not sure where this comes from.

images

Photo: 42. Left MLG Tires . . . Check
Click photo for a larger image

43. Left MLG Safety Pin . . . Remove

images

Photo: 43. Left MLG Safety Pin . . . Remove
Click photo for a larger image

44. Left Wing Flaps / Spoilers / Ailerons . . . Check

images

Photo: 44. Left Wing Flaps / Spoilers / Ailerons . . . Check
Click photo for a larger image

45. Static Wicks (3) . . . Check

images

Photo: 45. Static Wicks (3) . . . Check
Click photo for a larger image

46. Left Winglet . . . Check

images

Photo: 46. Left Winglet . . . Check
Click photo for a larger image

47. Left NAV / Strobe / Wingtip Lights . . . Check

images

Photo: 47. Left NAV / Strobe / Wingtip Lights . . . Check
Click photo for a larger image

48. Left Leading Edge Wing Tip Vent . . . Check

images

Photo: 48. Left Leading Edge Wing Tip Vent . . . Check
Click photo for a larger image

49. Left Wing Equipment Bay Vent . . . Check

images

Photo: 49. Left Wing Equipment Bay Vent . . . Check
Click photo for a larger image

50. Left Fuel Tank Vent . . . Check

images

Photo: 50. Left Fuel Tank Vent . . . Check
Click photo for a larger image

51. Left Wing Leading Edge . . . Check

images

Photo: 51. Left Wing Leading Edge . . . Check
Click photo for a larger image

52. Left Window Emergency Releases / Windows . . . Secure

images

Photo: 52. Left Window Emergency Releases / Windows . . . Secure
Click photo for a larger image

53. Left Landing Light . . . Check

images

Photo: 53. Left Landing Light . . . Check
Click photo for a larger image

54. MED . . . Check

images

Photo: 54. MED . . . Check
Click photo for a larger image

55. MED Emergency Open Button . . . Unlocked

Wait, isn't it too late? Yes, you should have checked this at the start.

images

Photo: 55. MED Emergency Open Button . . . Shown locked
Click photo for a larger image

The lock needs to be unlocked for flight.

56. Confirm all gear pins (8) are removed and stowed. All external covers removed and stowed.

images

Photo: 56. Confirm all gear pins (8) are removed and stowed. All external covers removed and stowed.
Click photo for a larger image


See Also:

Gulfstream GVII-G500 Aicraft Operating Manual, Revision 2, February 20, 2019

Gulfstream GVII-G500 Airplane Flight Manual, Revision 5, March 3, 2020