The PAVE checklist was developed by the FAA and adopted by aviation authorities worldwide (including the KCAA) as a structured way to identify risk before a flight. It is not a checklist in the traditional sense: you are not confirming that switches are in the right position. You are assessing whether the overall risk picture is acceptable for the flight you are about to conduct.
Each letter stands for a category of risk: Pilot, Aircraft, enVironment, and External pressures. Most training programmes introduce PAVE in the early weeks of ground school but do not always follow through on how to apply it honestly in practice.
P: Pilot
The Pilot category is the one most students rush through. The temptation is to tick the box and move on. Honest assessment requires asking harder questions.
Start with the IMSAFE checklist, a sub-checklist specifically designed to surface personal fitness issues. IMSAFE covers Illness, Medication, Stress, Alcohol, Fatigue, and Emotion. Work through each factor honestly before considering yourself fit to fly.
Beyond IMSAFE, the Pilot category includes:
- Recency. In Kenya, KCAA requires a student pilot to have flown within the preceding 90 days to act as pilot-in-command under supervision. But regulatory currency and practical proficiency are not the same thing. If you have not conducted a crosswind landing on murram in three months, your PAVE assessment should flag that as a pilot risk factor on the day you fly to a bush strip.
- Experience on route/aircraft type. Flying into Eldoret (HKEL) for the first time is a different risk profile from flying your 50th circuit at Wilson. Unknown terrain, different ATC procedures, and altitude considerations all belong here.
- Recent training. Have you just completed an emergency procedure drill with your instructor? That improves your Pilot score. Have you been away from flying for a month due to exams? Acknowledge that honestly.
A: Aircraft
The Aircraft category is more than just confirming the tech log is current. For Kenyan student pilots operating school aircraft, the relevant questions include:
- Airworthiness. Is the C of A current? Is there a known defect in the tech log that has not been addressed? A known defect is a hard override in AngaBrief's risk engine: no matter what the other scores are, the risk band becomes DO NOT FLY.
- Equipment for the planned flight. If you are flying into Lodwar (HKLO) in the arid north, does the aircraft have enough fuel range, and is there confirmed fuel available? Lodwar has limited avgas supply, verifying this is part of your Aircraft assessment, not your Environment assessment.
- Aircraft performance for the conditions. Density altitude is underappreciated in Kenya. Nanyuki (HKNY) sits at 6,250 ft AMSL. A C172 that performs normally at Wilson (5,536 ft) will be noticeably sluggish at Nanyuki, especially in the midday heat. The Aircraft category is where you cross-check performance charts for the specific density altitude on the day.
Do not let familiarity with the aircraft reduce your rigour. Students flying the same C172 every day sometimes skip the Aircraft section mentally. A school aircraft is maintained by a roster of people and can develop snags between your flights.
V: enVironment
The Environment category is consistently the most complex for Kenya-based operations. Kenya has exceptional geographic and meteorological diversity: coastal humidity, highland convection, Rift Valley winds, and arid north thermals all operate on different patterns.
Weather. Kenya does not have a dense network of METAR stations. Wilson (HKNW) and JKIA (HKJK) have reporting, as does Mombasa (HKMO), Kisumu (HKKI), and Eldoret (HKEL). For most of the 28 private and concession strips, weather information comes from pilot reports, visual observation, or phone calls to the landing area. Build this information-gathering into your pre-flight planning time, not as an afterthought on engine start.
Terrain. The Aberdare Range, Rift Valley escarpment, and Mount Kenya all generate significant orographic lift, wave activity, and mechanical turbulence. A direct routing that looks short on a chart may cross terrain that produces severe turbulence at certain times of day. VFR flight over high terrain in deteriorating visibility is a frequent precursor to Controlled Flight Into Terrain (CFIT) accidents worldwide.
Aerodrome environment. For each destination, consider: runway surface and condition (see our guide to crosswind on murram), wildlife hazard, traffic patterns, and the availability of emergency landing areas on the route. Kenyan wildlife strips routinely have zebra, wildebeest, or giraffe on or near the runway.
Time of day. Thermal activity in Kenya peaks in the early afternoon. The IFR conditions that can develop rapidly over high terrain in the late afternoon are a known risk. An early morning departure that puts you over the Aberdares before 10:00 EAT is a very different environment from a 13:00 departure.
E: External pressures
External pressures is the category that pilots underreport and instructors find hardest to assess from the outside. The question is simple: is there anything pushing you to complete this flight that would not be there if the flight were entirely optional?
Common external pressures in a flight training context:
- "I need to complete this navigation exercise to stay on schedule for my skills test."
- "My parents have paid for this flying lesson and are watching from the viewing area."
- "The school is short of aircraft and this slot won't be available again this week."
- "I've already driven from Thika this morning and don't want the trip to be wasted."
None of these pressures disappear by identifying them. But identifying them allows you to apply a counter-pressure: the deliberate decision to proceed, delay, or cancel based on the actual risk picture rather than the social or financial pressure. This is what the KCAA calls aeronautical decision-making (ADM), and it is a tested component of your skills test.
Using PAVE in AngaBrief
AngaBrief's pre-flight assessment is structured around the PAVE/IMSAFE framework. Each section feeds into a weighted risk score across five categories: Environment (30%), IMSAFE (25%), Pilot (20%), External pressures (15%), and Aircraft (10%). The weighting reflects the statistical contribution of each category to general aviation accidents in Eastern Africa.
Your instructor reviews your completed assessment before approving the flight. They can see not just the overall risk band but the specific factors that drove the score, which means a vague "I felt fine" in the Pilot section does not survive the review process. That accountability is by design.
The framework works best when you treat it as a genuine risk dialogue with your instructor, not a form to be completed as quickly as possible before a flight. Used honestly, it catches the days when external pressure or fatigue is pushing you toward a flight that the objective conditions do not support.