2. TM 1-1520-237-10 dated 31 OCT 96 Current Change #3 dated 30 OCT 98 UH-60A Preflight Procedures

3. Introduction Test Preflight Procedures Review Tests Conclusion

4. UH-60A Preflight Procedures

6. O - If installed * (Asterisk) - Performance mandatory for preflight (Star) - Operational check required N - Applies only to night flight I - Applies only to instrument flying Symbols Definition

7. UH-60A Preflight Procedures WARNING Do not preflight until armament systems are safe, switches off, safety pins installed and locking levers in locked position.

8. UH-60A Preflight Procedures 8.11 Before Exterior Check. 1. Publications - Check required forms and publications, and availability of operator’s manual(s) (-10) and checklist (-CL)

9. UH-60A Preflight Procedures 8.11 Before Exterior Check. *2. Helicopter covers, locking devices, tiedowns, and grounding cables - Removed and secured.

10. UH-60A Preflight Procedures 8.11 Before Exterior Check. *2. Helicopter covers, locking devices, tiedowns, and grounding cables - Removed and secured.

11. UH-60A Preflight Procedures 8.11 Before Exterior Check. *3. Fuel - Check quantity as required. 4. Fuel sample - As required. Check for contamination before first flight of the day and after adequate settling time after cold refueling, or if fuel source is suspected contaminated. page 2-92, NOTE #6. Fuel settling time for jet (JP) fuel is 1 hour per foot depth of fuel. Allow the fuel to settle for the prescribed period before any samples are taken (about 4 hours for proper settling)

12. UH-60A Preflight Procedures CAUTION Do not deflect main rotor blade tips more than 6 inches below normal droop position when attaching tiedowns. Do not tie down below normal droop position.

13. UH-60A Preflight Procedures 8.13 Nose Section (Area 1). *1. Main rotor blades - Check

14. UH-60A Preflight Procedures 8.13 Nose Section (Area 1). 2. Fuselage - Nose area, check as follows: a. Wipers O b. OAT Sensor - Check. c. Avionics compartment a. Windshield O b. FAT indicator probes - Check.

15. UH-60A Preflight Procedures 8.13 Nose Section (Area 1). ARN 89 ADF Dimming Control NVG Light HUD SDC Kit 1C Copilot Turn Rate Gyro #1 Vertical Gyro Pilot Turn Rate Gyro CIS Processor #2 Vertical Gyro Dimming Control NVG Light ASN 43 Gyro Magnetic Compass Stabilator Comparator Test Panel KY 58 FM #1 KY 58 UHF KY 58 FM #2 Audible Warning Signal Unit Doppler ASN 128 #1 and #2 Signal Data Converters-behind KY (not visible in this view)

16. UH-60A Preflight Procedures 8.13 Nose Section (Area 1). SAS 1 AMP YAW and ROLL SAS 2 Rate Gyros in EMI modified box. APR 39 Processor KY 58 UHF KY 58 FM #2

17. UH-60A Preflight Procedures 8.13 Nose Section (Area 1). HUD SDC APR 39 Processor SAS 1 AMP AN/ARN 123V VOR/ILS/Marker Beacon

18. UH-60A Preflight Procedures 8.13 Nose Section (Area 1). 2. d. Antennas - Check. 2. e. Landing and search lights - Check. AN/APR 39Radar Warning Antennas Search Light Landing Light Radar Altimeter Antennas Doppler Antenna VHF-FM #2, VHF- AM, LF/ADF Sense Antenna

19. UH-60A Preflight Procedures 8.14 Cockpit - Left Side (Area 2). 1. Cockpit area - Check as follows: a. Cockpit door - Check.

20. UH-60A Preflight Procedures 8.14 Cockpit - Left Side (Area 2). 1. Cockpit area - Check as follows: b. Copilot seat, belts, and harness - Check.

21. UH-60A Preflight Procedures 8.14 Cockpit - Left Side (Area 2). 1. Cockpit area - Check as follows: d. Landing gear support fairing and step - Check. e. Position light - Check. c. FM antenna - Check f. Main landing gear - Check. O g. ES Stuff h. Gunner’s window - Check. i. Ambient sense port - Check.

22. 8.14 Cockpit - Left Side (Area 2). 1. Cockpit area - Check as follows: UH-60A Preflight Procedures i. Ambient sense port - Check.

23. 8.14 Cockpit - Left Side (Area 2). * 2. Left engine oil level - Check. UH-60A Preflight Procedures page 2-90, para. 2.86. Wait at least 20 minutes after engine shutdown before checking engine oil level.... If flights over 6 hours are made, engine oil level must be at the full line of sight glass before flight.

24. UH-60A Preflight Procedures 8.15 Cabin Top (Area 3). 1. Cabin top - Check as follows: a. Left engine - Check inlet. b. Left pitot tube - Check.

25. 8.15 Cabin Top (Area 3). Note: Maintenance platform 1. Cabin top - Check as follows: removed for clarity. UH-60A Preflight Procedures c. flight controls c. Check area c. hydraulic reservoir, and filter indicators. Check tempilabels for safe indication and security. (TRIC)

26. UH-60A Preflight Procedures 8.15 Cabin Top (Area 3). Note: 2nd filter indicator and tempilabel 1. Cabin top - Check as follows: not visible in this view. c. filter indicators c. Check tempilabels for safe indication and security. c. hydraulic reservoir page 2-94, para. 2.89. Piston movement of up to 3/8” into the blue (overfill) zone is acceptable. Overserviced

27. UH-60A Preflight Procedures f. Right engine - Check inlet. e. Right pitot tube - Check. 8.15 Cabin Top (Area 3). 1. Cabin top - Check as follows: d. Control access cover - Close and check secured.

28. UH-60A Preflight Procedures 8.15 Cabin Top (Area 3). 1. Cabin top - Check as follows: O g. IRCM - Check.

29. UH-60A Preflight Procedures 8.15 Cabin Top (Area 3). 2. APU - Check oil level, use dipstick. O3. APU IPS (Not shown) page 2-94, para. 2.87b.When the APU is cool to the touch the COLD side of the dipstick may be used. If the APU is hot to the touch, the HOT side of the dipstick may be used.

30. UH-60A Preflight Procedures 8.15 Cabin Top (Area 3). 4. Gust lock - Check. 5. Main transmission - Check oil level. page 2-95, para. 2.91b. Read hot side of dipstick when checking hot oil (immediately to ½ hour after shutdown), or cold side of dipstick when checking cold oil (at least 2 hours after shutdown).

31. UH-60A Preflight Procedures 8.15 Cabin Top (Area 3). 6. Main rotor system - Check blades.

32. UH-60A Preflight Procedures 8.15 Cabin Top (Area 3). Note: Only one of each area is indicated 6. Main rotor system - by each arrow - check all areas. dampers Check controls BIM indicators - Check for safe indication (yellow color) head

33. UH-60A Preflight Procedures 8.16 Interior Cabin (Area 4). 1. Cabin - Check as follows: a. Fire extinguishers - Check. Right gunner’s window extinguisher Left pilot seat extinguisher

34. UH-60A Preflight Procedures 8.16 Interior Cabin (Area 4). Note: There is one more first aid 1. Cabin - Check as follows: kit on the right pilot seat back c. Pilot’s and copilot’s tilt-back release levers - Lock position. b. First aid kit

35. UH-60A Preflight Procedures 8.16 Interior Cabin (Area 4). 1. Cabin - Check as follows: d. Cabin interior - Check security of stowed equipment e. Cabin seats and belts - Check.

36. UH-60A Preflight Procedures 8.16 Interior Cabin (Area 4). 2. APU accumulator pressure gage - Check minimum 2,800 psi.

37. UH-60A Preflight Procedures 8.16 Interior Cabin (Area 4). 3. Transmission oil filter impending bypass indicator - Check.

38. UH-60A Preflight Procedures 8.16 Interior Cabin (Area 4). 4. Cargo hook: Note: Sorry, no cargo hook picture. a. General condition and security. b. Electrical connections condition and security. 5. Survival gear and mission equipment - Check as required.

39. UH-60A Preflight Procedures 8.17 Fuselage - Left Side (Area 5). 1. Fuselage - Check as follows: a. Cabin door - Check. O * b. VOL Armament system - Check (not pictured). c. Fuel tank filler ports - Check; caps secure, doors secured. d. External pneumatic inlet port - Door secured. e. Engine exhaust - Check.O f. APU IPS exhaust - Check. g. APU exhaust - Check. O h. Chaff dispenser - Check; number and programmer settings i. Lower anticollision light - Check.

40. UH-60A Preflight Procedures 8.17 Fuselage - Left Side (Area 5). 1. Fuselage - Check as follows: i. Lower anticollision light - Check. j. Antennas - Check. (VOR, Localizer) O h. Chaff dispenser - Check; number and programmer settings k. Tail landing gear - Check. * 2. Intermediate gear box - Check; oil level.

41. UH-60A Preflight Procedures * 2. Intermediate gear box - Check; oil level. 8.17 Fuselage - Left Side (Area 5).

42. UH-60A Preflight Procedures 8.18 Tail Pylon (Area 6). 1. Tail pylon - Check as follows: a. Tail pylon - Check. b. Stabilator - Check. O c. Radar detector and antennas - Check. d. Position light - Check. e. Upper anticollision light - Check.

43. UH-60A Preflight Procedures 8.18 Tail Pylon (Area 6). *2. Tail rotor - Check.

44. UH-60A Preflight Procedures 8.18 Tail Pylon (Area 6). *3. Tail rotor gear box - Check; oil level.

45. UH-60A Preflight Procedures 8.19 Fuselage - Right Side (Area 7). 1. Fuselage - Check as follows: a. Antennas - Check. c. Fire bottles thermal plug - Check. d. Engine exhaust - Check. e. Fuel tank gravity filler port - Check cap secure; door secured.

46. UH-60A Preflight Procedures 8.19 Fuselage - Right Side (Area 7). 1. Fuselage - Check as follows: O * f. VOL Armament system - Check (not pictured). c. Fire bottles thermal plug - Check. e. Fuel tank gravity filler port - Check cap secure; door secured. g. Cabin door - Check.

47. UH-60A Preflight Procedures 8.20 Cockpit - Right Side (Area 8). *1. Right engine oil level - Check. page 2-90, para. 2.86. Wait at least 20 minutes after engine shutdown before checking engine oil level.... If flights over 6 hours are made, engine oil level must be at the full line of sight glass before flight.

48. UH-60A Preflight Procedures 8.20 Cockpit - Right Side (Area 8). 2. Cockpit area - Check as follows: O a. Ice detector - Check. b. Ambient sense port - Check.

49. UH-60A Preflight Procedures 8.20 Cockpit - Right Side (Area 8). 2. Cockpit area - Check as follows: h. Landing gear support fairing and step - Check. g. Position light - Check. i. FM antenna - Check f. Main landing gear - Check. e. External electrical power receptacle - Door secured. d. Gunner’s window - Check. j. Cockpit door - Check.

50. UH-60A Preflight Procedures 8.20 Cockpit - Right Side (Area 8). 2. Cockpit area - Check as follows: j. Cockpit door - Check. O l. Set switch on dimmer control box as desired. NORM for IR dimming. k. Pilot seat, belt, and harness - Check.

51. UH-60A Preflight Procedures 8.20 Cockpit - Right Side (Area 8). 3. Crew and passenger briefing - Complete as required.

52. UH-60A Preflight Procedures Review Tests

53. UH-60A Preflight Procedures Test Preflight Procedures Review Tests Conclusion

54. UH-60A Preflight Procedures