Lesson 4. Medium Level Turns

Date: 24/9/2016
Flight Purpose: Medium level turns
Flight time (hrs): 0.8
Aircraft VH-TOI, Tobago

Airport: Hervey Bay Aerodrome
Instructor: BS, Briefing time (hr): 1
Time to take off: 10:00 Runway: 29  YHBA
Time to land: 10:50 Runway:  29  YHBA
Total Engine time: ___ Approx. Fuel ____
Wx: Wx at aerodrome: Cloud None, Temp: 21.8, Wind Direction 200, Wind Strength 5 , Dewpoint: 9, Rainfall 0, Wind types steady, Visibility >10km, Humidity 59%, QNH 1012, Changes in Wx Conditions, BOM daily Wx obs: Temps Min (°C) 9.3, Max (°C) 26.9, Rain (mm) 0, Evap -, Sun -, [[Max daily wind gust: Dir __, Spd (km/h) __, Time (local) __]] [[9:00am record: Temp (°C) 21.8, RH (%) 41, Cloud – , Dir SSW, Spd (km/h) 7, MSLP (hPA) 1013.4]], [[3:00pm record: Temp (°C) 24.5, RH (%) 50, Cloud – , Dir N, Spd (km/h) 19, MSLP (hPa) 1008.4]]  http://www.bom.gov.au/climate/dwo/IDCJDW4056.latest.shtml

TAF YHBA 232107Z 2400/2412


FM240400 01012KT 9999 FEW040

FM241100 34006KT 9999 SCT015 SCT025


T 23 25 24 20 Q 1013 1010 1009 1009

METAR YHBA 240400Z AUTO 36011KT 9999 // NCD 24/12 Q1009

RMK RF00.0/000.0
Goals: Master turning by visual control of planes, medium level turns at level flight and climbing and descending turns at 15 degrees.

Briefing discussion – discussed the force components of medium level turns. The impact of adverse aileron effect (i.e. wing tipping over the plane in a turn) and adverse yaw (from induced wing drag)… Correction with active aileron and re; control surfaces, discussed differential and frise ailerons to counteract the adverse yaw. Understand the difference between slips and skids. Understand overbank and underbank tendency while turning. Adopt a standard operating procedure around turning; prior – attitude, lookout, performance then bank, balance, backpressure. NB Rate 1 is the 180 deg turn in 1 min… andlge of bank ranges between 15-20 deg but is indicated on the turn coordinator (important for IFR). Aso discussed the use of the Constant Speed Unit (CSU) – for controlling mixture, pitch and throttle.
Tasks: pre-flight checks, oil administration, start-up procedures and checks, radios, take-off, climbing, descent, turns, managing the CSU, approach to run-way (handed over control for landing in crosswind)
Notes:  Familiarised oneself with aircraft, cockpit and control surfaces. Fuel rate of consumption is measured inside the cockpit with avionics. Nice new NAVMAN (garmin) installed, with navaid radios, stall alarm is a bell, indicators and some controls are placed in more intuitive places on the dashboard… for instance all the warning lights are directly above the yoke. Pedals were heavy to respond to and stick during flight, felt different to begin with – due to ~9-10 week absence of flying there was some tendency to over-control the aircraft on take-off with elevator… forgot to correct with aileron and rudder on take off… the Tobago had noticeably more power than the PA-28, rotate speed came within a few seconds of pulling full throttle. The plane has a tendency to back-fire so be careful with moving the throttle back and fourth with smother movements. Trim is very responsive and could be set to forget. Automatic flaps were really useful, the aircraft also has take-off flaps as a requirement. Upon landing it was noted that the aircraft was heavy on the nose and more difficult to steer, therefore it is advised to pull back on the yoke while rolling down the runway on landing.
Critical speeds in TOI:  Climbing speed– 80 kt, Glide speed 86 kt
Radios: YHBA AWIS 134.9, general


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