What’s Control Surface?
February 10, 2026
What’s Control Surface? A control surface is a movable part at the trailing edge of an airfoil that helps control its orientation and movement in flight.
Function of Aircraft Oil?
February 3, 2026
Key Functions of Aircraft Oil: Lubrication: Creates a thin film between moving parts to reduce wear and friction. Cooling: Transfers heat away from hot engine components, acting as a primary cooling system that can handle up to 50% of the total engine cooling needs. Cleaning: Picks up contaminants (dirt, carbon, metal particles) and carries them
Engines 101: The Basics of How Engines Work
February 1, 2026
4-Stroke & 2-Stroke Engine | Its Parts & Working Explained Camshaft, Crankshaft, rpm? Normal aspirate vs Turbocharger Engine?
Engine failure “procedures“
January 31, 2026
“ABCDE” procedures: Training for this is usually done over or close to a suitable landing area. The best instructors will teach you how to always be looking for a place to land—just to be prepared. Ref: Flying Magazine Jan 2026 by MEG GODLEWSKI
How Does Lowering Flaps Affect an Airplane’s Angle of Attack (AOA)?
January 31, 2026
Lowering flaps increases the wing’s camber and allows the aircraft to fly at a smaller angle of attack (AOA) Flaps Lowered Take this wing, starting in a clean configuration. When the pilot lowers the flaps, two things immediately happen: the wing camber and the AOA both increase. However, to maintain certain required lift, the AOA must be reduced… so
Rate of Turn (ROT), Radius of Turn
January 29, 2026
maximum permissible load factor at the stall speed for : 1) minimum radius 2) maximum ROT ROT 反比Radius of turn The rate of turn is directly proportional to the angle of bank and inversely proportional to the TAS which means that for maximum rate of turn, the angle of bank must be as large as
Balance tab vs Anti-balance tab
January 27, 2026
Balance tab is NOT Trim tab! balance tab’s movement is linked to the primary surface’s position, while a trim tab stays in a fixed position until adjusted. Balance tabs are rigged to operate automatically with application of the elevator and assist the pilot in reducing the control force necessary to move the elevator. They work in much the
What’s Speed Instability, region of reverse command, backside of the power curve ?
January 27, 2026
Introduction – why pilot should know these phases? What Is “Speed Instability”? Speed Instability, region of reverse command, backside of the power curve are just different terms to describe same topic! reverse command is encountered at low airspeed. It is also known as the back of the power curve, and is normally situated below the
What affects stall speed?
January 24, 2026
Use Lift formular to assist in explanation: Lift = CL S 1/2 V2 Factors: Load Factor Weight Contamination on wing Power (Slipstream) Flaps https://youtu.be/2iQttM-b-pQ?si=M-wi8MUfxjqtsgLw
Surface wind, Geostrophic wind, Upper wind (thermal wind)
January 24, 2026
What’s wind? horizontal movement of air due to pressure differences in various places Surface wind is the geostrophic wind modified by friction Geostrophic wind is the wind of which direction parallel to straight isobar. The strength is depended on spacing between isobars Upper wind (thermal wind) is determined by thermal gradient. For example, the jet
What’s Jet Stream?
January 22, 2026
jet stream is a high speed, narrow band of westerly wind at high altitude ! 題外話： 重推本文係因為我study buddy 同我溫書後，我覺得吾太熟呢個topic! 😆 How fast (is the speed) of a jet stream? Typical jet stream can has a speed of 100 KT to 200 KT! BUT minimum at least 60KT Fact check info on https://skybrary.aero/articles/jet-stream#:~:text=A%20second%20jet%20stream%20sometimes,particularly%20over%20south-east%20Asia. How high of the
晨讀及溫故知新系列： FCOM/CCOM
September 9, 2025
我覺得AViation 界最成功就係個個演員除左要有咁上下應變力，就係劇組有比稿 FCOM : Flight Crew Operating Manual CCOM : Cabin Crew Operating Manual The Flight Crew Operating Manual (FCOM) is issued by the manufacturer as a guideline for operators to develop their own Standard Operating Procedures (SOPs) in accordance with applicable requirements. This source document incorporates aircraft manufacturer guidance on how to use the systems on board
溫故知新系列之： Threat, Hazard, Risk
September 4, 2025
我吾甘心只做SO , 我要做Captain 😗 https://www.icao.int/sites/default/files/APAC/Meetings/2025/2025%20APWHMWG7/Workshop%20Presentations/2-1_ICAO-WHM-Wkshop_2025_Ash_Hazards-Threats-and-Risks.pdf https://www.casa.gov.au/operations-safety-and-travel/safety-management-systems/sector-safety-risk-profiles/using-our-bowtie-risk-analysis#Readingabowtieanalysis 今早坐車睇下文章見到Airbus 刊物有呢句： A lithium battery fire during flight is a significantly growing threat due to the increasing number of portable electronic devices carried by aircraft occupants. 突然令我唸返自己做左太耐港式既safety，忘了International language…In aviation safety management, we have more and more concepts. the hazard: something with the potential to cause risk the top event: in the middle
溫故知新系列之 Propeller System
August 30, 2025
呢個禮拜就睇下Propeller System Fixed-Pitch Propeller Low Pitch (high rpm) for climb High Pitch (low rpm) for cruise The climb propeller has a lower pitch, therefore less drag. Less drag results in higher rpm and more horsepower capability, which increases performance during takeoffs and climbs but decreases performance during cruising flight. The cruise propeller has a higher
溫故知新系列之: 點解新飛機都係黃黃綠綠 (Aircraft Structure)
August 24, 2025
星期天又是輕鬆得黎要認真既一日, 溫下書…又學多一點點~ 點解新飛機都係黃黃綠綠? The paint used is a green zinc chromate or zinc phosphate primer, which manufacturers apply to newly built aircraft to prevent corrosion. 無意中又發現，原來HX (Hong Kong Airline) 係A350 launch airline https://www.airbus.com/en/newsroom/press-releases/2017-09-hong-kong-airlines-becomes-new-operator-of-the-a350-xwb 好…今日就簡單溫下 Chapter 3 : Aircraft Construction 咩係Aircraft? (又係back to basic 系列?) …突然唸返讀AOM 果陣學既野! https://applications.icao.int/postalhistory/annex_7_aircraft_nationality_and_registration_marks.htm#:~:text=According%20to%20Annex%207%20%2D%20Aircraft,heavier%2Dthan%2Dair%20craft. Aircraft is defined as any machine that
Learn from “stupid” question
August 7, 2025
https://youtu.be/vjDYfvPW4mA https://youtu.be/78-SDJJ9WOA https://youtu.be/h2xjww7Z0hw https://youtu.be/HSRmfNDk87s https://youtu.be/dveUKRVmKTw https://youtu.be/oAHbLRjF0vo https://youtu.be/dSZpwO30lkg https://youtu.be/53wtpyUwvH8 https://youtu.be/b9P1uQziovs 每條問題都可以有啟發…所以以前或者會有話人「咩你條問題咁on9」 但家下讀左aviation 耐左 ，明白到 “no stupid question” 溫故知新 🛫💪🏻
A350 系列
August 7, 2025
今晚搵到條好正既片 先從A350 hydraulic system 開始 https://youtu.be/10GaHtTpg-g 睇睇下吾對路 要多d認識再睇 bookmark先
