Area II — Preflight Procedures

Cessna 172S G1000 Preflight Inspection — PPL Oral Exam Questions

Walk-around inspection items, fuel sampling, control checks, and airworthiness items a DPE will probe on the ramp. Below are real DPE-style questions for the Cessna 172S Skyhawk SP (Garmin G1000). Every answer cites a primary FAA source — no fabricated regulations, no shortcuts.

3 questionsAirplane Flying Handbook (FAA-H-8083-3C)POH Section 4POH

Aircraft profile

Cessna 172S Skyhawk SP (Garmin G1000)

Engine
Lycoming IO-360-L2A, 180 HP, fuel-injected
Fuel system
Gravity-feed, fuel selector BOTH/LEFT/RIGHT. Same caveat as six-pack — no separate fuel shutoff valve, OFF integrated on most airframes.
Avionics
Garmin G1000 glass cockpit (PFD + MFD). Backup AI (standby horizon). Backup altimeter. GFC 700 autopilot on equipped aircraft.
VS0 / VS1
40 KIAS / 48 KIAS kt
VA
varies by weight, see POH kt
Max gross
2550 lbs lbs

DPE oral questions · preflight inspection

3 questions a DPE may ask in this section

  1. Question 1 · PA.II.A.K1

    What does the preflight inspection accomplish and what are you specifically checking on the fuel?

    What a DPE expects to hear

    • Preflight ensures aircraft is airworthy before flight
    • Fuel: check quantity (visual + dipstick if available), check for contamination (sump each tank and gascolator), verify correct fuel type
    • Fuel contamination: water (clear drops, heavier than fuel, settles at bottom), sediment
    • 100LL is blue; jet fuel is clear/straw-colored — mixing is dangerous
    • Fuel caps secured after checking

    SourceAFH FAA-H-8083-3C; Aircraft POH Section 4

  2. Question 2 · PA.II.A.K2

    Explain what you're checking when you inspect the control surfaces during preflight.

    What a DPE expects to hear

    • Check for proper movement: full range of travel in correct direction
    • Check for damage: cracks, dents, missing rivets, corrosion
    • Check for security: control surfaces attached, hinges intact, no unusual play
    • Verify ailerons, elevator, and rudder move freely and correctly
    • Check flaps for damage and proper operation
    • Verify trim tabs

    SourceAFH FAA-H-8083-3C; Aircraft POH

  3. Question 3 · PA.II

    The airplane is fueled and your bags are packed. Prove to me that you and this airplane are legal to make this flight today.

    What a DPE expects to hear

    • Systematic check — Pilot (certificates, currency, IMSAFE) + Aircraft (AROW documents, AV1ATES inspections) + Environment (VFR minimums, NOTAMs)

    SourceACS Task I.A and I.B; 14 CFR 61.3, 91.103

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