Low Fuel, High Stakes
Fuel mismanagement on descent to a non-towered field — the engine quits when you need it most
The scenario
Departing Clearwater Air Park (KCLW), Clearwater, FL — Runway 16, descending on a 155° heading into a local practice area. Elevation 71 ft MSL. It is a clear, calm VFR afternoon; you are returning from a 2.5-hour cross-country flight to a nearby airport and back.
You departed KCLW this morning with full tanks (48 gallons total: 24 left, 24 right). The flight plan called for 1.5 hours out, 1.5 hours back, with 45 minutes reserve — a comfortable margin. You flew the outbound leg on the right tank (as planned), switched to the left tank at the 1.5-hour mark, and flew the return leg on the left. You are now 2 hours 45 minutes into the flight.
You are at 2,500 ft MSL, 8 nm northeast of KCLW, descending toward the field on a 155° heading. The fuel gauges read: LEFT tank approximately 3 gallons, RIGHT tank approximately 5 gallons. You have not switched tanks since the return leg began. You are planning to enter the pattern for Runway 16 and land.
Aircraft: Piper PA-28R-200 (Arrow), solo, within weight and balance limits. Lycoming IO-360 fuel-injected engine, constant-speed prop, retractable gear (currently down and locked), fuel selector on LEFT. KCLW is non-towered (CTAF 122.8); you will self-announce on downwind and final.
Pilot: you — a Private pilot with a complex-aircraft endorsement, roughly 350 hours total, 80 hours in type. You are current and proficient. You did not obtain a detailed weather briefing for this local flight (it is VFR, clear, and calm). You did not file a flight plan. You are familiar with KCLW but have not landed there in three months.
- {'label': 'Field', 'value': 'KCLW · Clearwater Air Park'}
- {'label': 'Runways', 'value': '16/34'}
- {'label': 'Elevation', 'value': '71 ft'}
- {'label': 'Aircraft', 'value': 'PA-28R'}
- {'label': 'Dominant phase', 'value': 'Landing / Approach'}
The decision
Before we get into the decision tree — what do you know about fuel management in the PA-28R? (Pick all that apply; this records your baseline.)
What the record shows
What the NTSB files show
NTSB WPR21FA352 (2021): A Piper PA-28R-200 on a personal cross-country flight experienced total engine power loss due to fuel exhaustion during descent to the destination airport. The pilot had planned the flight with inadequate fuel reserves and did not monitor fuel consumption carefully during the flight. The accident resulted in a forced landing and fatalities. The probable cause was the pilot's improper fuel planning.
NTSB ERA13LA111 (2013): A Piper PA-28R on an IFR flight from Georgia to Delaware experienced total loss of engine power due to fuel exhaustion after the pilot attempted multiple missed approaches at three different airports. The pilot was operating in low IMC and did not declare a fuel-related emergency until it was too late. The accident resulted in a forced landing and fatalities. The probable cause was the pilot's failure to land at multiple airports equipped with adequate instrument approach procedures and his delay in declaring a fuel-related emergency.
NTSB ERA13CA362 (2013): A Piper PA-28R-180 on a night personal cross-country flight without a weather briefing encountered low visibility at the destination, executed a missed ILS approach, diverted to an alternate airport, and exhausted fuel before reaching it. The pilot was fatigued from lack of sleep and did not obtain weather briefings at intermediate stops. The accident resulted in a forced landing. The probable cause was inadequate preflight and in-flight planning and failure to obtain weather briefings.
NTSB WPR24LA167 (2024): A Canadian Car & Foundry Harvard MK IV lost all engine power due to fuel starvation when the pilot improperly selected the left fuel tank at low fuel levels. The accident resulted from improper fuel tank selection and a malfunctioning fuel selector. The pilot executed a forced landing that struck a dirt berm. The lesson: understand fuel tank capacity limits and avoid switching to reserve/low tanks when the main tank is still usable.
NTSB GAA19CA534 (2019): A Piper PA-28 lost engine power during descent to land after the pilot switched to the left fuel tank and failed to follow the emergency power loss checklist. The accident resulted from improper fuel management and failure to switch to the right tank containing usable fuel. The lesson: plan fuel tank switches in advance; when power loss occurs, immediately switch back to a known good tank rather than troubleshooting.
The real accidents cited above occurred at other airports and in other aircraft types — NOT at Clearwater Air Park (KCLW). KCLW has its own accident history dominated by forced landings, loss of control, and gear-up landings. The scenario is localized to KCLW to make the off-field environment real and consequential for you as a student here. Off Runway 16's climb-out (155° heading), the environment is dense development, low-density development, and medium development — no open fields, no water, but buildings and structures. A forced landing there is a collision with obstacles, not a field landing.
The consistent thread across all these events: fuel mismanagement in the PA-28R is insidious. The fuel selector is LEFT / RIGHT / OFF — there is no BOTH position. Each tank holds 24 gallons, but only about 23 gallons is usable (1 gallon per tank is unusable reserve). The PA-28R has no crossfeed capability — if one tank runs dry, the engine quits; you cannot switch to the other tank and continue. Fuel tank switches must be planned in advance (e.g., at +1 hour, +3 hour marks) and logged. The failure is always a delay in switching tanks or inadequate fuel planning at the preflight stage.
Key lesson — In the PA-28R, fuel management is not optional. The fuel selector is LEFT / RIGHT / OFF — there is no BOTH position. Plan tank switches in advance (e.g., at +1 hour, +3 hour marks) and log them. Monitor fuel gauges continuously, understanding that PA-28R fuel gauges are notoriously inaccurate — the actual fuel may be less than the gauge reads. At KCLW, the off-field environment off Runway 16's climb-out is dense development — a forced landing there is a collision with obstacles. Adequate fuel planning and disciplined tank switching are the only defense.
Debrief — teaching points
The PA-28R fuel selector is LEFT / RIGHT / OFF — there is no BOTH position.
Unlike some Cessnas, the PA-28R does not have a BOTH position on the fuel selector. You must actively select LEFT or RIGHT. The airplane has two 24-gallon tanks; approximately 23 gallons per tank is usable (1 gallon per tank is unusable reserve). If you run one tank dry, the engine quits — there is no crossfeed capability. You cannot switch to the other tank and continue. Fuel tank selection is not a passive system; it is an active, disciplined procedure.
Plan fuel tank switches in advance — do not switch ad-hoc during descent or approach.
Establish a fuel tank switching schedule before flight (e.g., switch to the right tank at +1 hour, switch to the left tank at +3 hours). Log the time and tank selection. This prevents the trap of running one tank dry while the other tank has fuel. Switching tanks during descent or approach adds workload and complexity at a critical moment. The time to switch tanks is during cruise, at a planned interval, when you have time to monitor the engine response.
PA-28R fuel gauges are notoriously inaccurate — do not trust them.
The fuel gauges on the PA-28R are electrical and subject to calibration errors, especially at low fuel levels. A gauge reading of 3 gallons may actually be 1 gallon or less. Never assume the gauge is accurate. Use flight time and fuel burn calculations to estimate fuel remaining. If the gauge and your calculations disagree, assume the worse case — less fuel than the gauge indicates.
Descent and approach require higher power settings — fuel consumption increases.
During cruise, the engine runs at 1,800–2,000 RPM and burns approximately 8–10 gallons per hour. During descent and approach, power settings are higher (1,500–2,000 RPM), and fuel burn increases to 10–12 gallons per hour or more. A fuel margin that seemed adequate at cruise altitude may be marginal during descent. Plan accordingly.
At KCLW, the off-field environment off Runway 16's climb-out is dense development.
The off-field environment off Runway 16's climb-out (155° heading) is dense development, low-density development, and medium development — no open fields, no parks, no water. A forced landing in this environment is a collision with obstacles. This is not a worst-case scenario; it is the geographic reality. Know this before you line up on Runway 16. If you lose the engine on the Runway 16 departure, your only option is to return to the field or land in developed terrain.
Best glide in the PA-28R is 79 KIAS — establish it immediately if the engine fails.
Best glide speed for the PA-28R is 79 KIAS at gross weight. This speed maximizes glide distance and gives the most time and distance to manage the emergency. If the engine fails, lower the nose to 79 KIAS immediately. Do not try to stretch the glide by flying slower — you will descend faster and cover less distance. Fly 79 KIAS precisely.
Lower the landing gear early in the approach — not late.
The PA-28R has retractable gear (Vle 129 KIAS). Lower the gear early in the approach (at 4–5 nm from the runway, at a safe altitude and airspeed). This ensures the gear is down and locked before you reach the critical final approach phase. Lowering the gear late (on downwind or final) adds workload and complexity. If the engine fails before you lower the gear, you will land gear-up.
Built from the real accident record
Scenario built from NTSB WPR21FA352 (2021 PA-28R fuel exhaustion on descent), ERA13LA111 (2013 PA-28R fuel exhaustion after missed approaches), ERA13CA362 (2013 PA-28R fuel exhaustion / inadequate planning), DEN07LA166 (2007 PA-28R fuel system failure), and regional precedents WPR24LA167, GAA19CA534, WPR12LA023, ERA17LA205 (fuel starvation / mismanagement across type-family). Anonymized and localized to KCLW.
NTSB reports: WPR21FA352 · ERA13LA111 · ERA13CA362 · DEN07LA166 · WPR24LA167 · GAA19CA534 · WPR12LA023 · ERA17LA205
ACS tasks: PA.I.F — Weather Information · PA.I.G — Cross-Country Flight Planning · PA.II.D — Fuel System Management · PA.IX.C — Emergency Approach and Landing · PA.I.H — Human Factors
Relevant FARs: §91.3 · §91.13 · §91.151 · §91.185
Step through the full decision tree, make the calls, and see where each choice leads — then debrief it with your CFI.
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