ACN/PCN Calculator vs Radar Performance

ACN/PCN Calculator The Ultimate Pavement Strength Tool for Aviation Professionals The ACN/PCN Calculator is your go-to app for evaluating the bearing strength of airport pavements, designed specifically for pilots, flight operations engineers, dispatchers, and airport operators. Whether you’re dealing with flexible or rigid pavements, this app ensures precise calculations to verify safe operations on runways, taxiways, and aprons. By leveraging the ICAO ACN/PCN method, as outlined in Annex 14 and Document 9157 Part 3, the calculator simplifies complex computations, helping you determine the maximum allowable aircraft weight with confidence. Why Choose the ACN/PCN Calculator? • Comprehensive Aircraft Database: Data is sourced from manufacturers’ publications, including the Aircraft Characteristics for Airport Planning (ACAP) manuals. Where necessary, ICAO-recommended methods or alternative sources ensure accuracy. • User-Friendly Design: Optimized for iPhone 8+ screens and fully compatible with iPads, the interface is intuitive and easy to navigate. Supported Aircraft Models Our extensive database includes popular aircraft from leading manufacturers: A300BeK/B4/B4-600R, A319, A320, A321, A330 (all variants), A340 (all variants), A350 (all variants), A380. B727-200, B737 (all variants), B747-400 (all variants), B747-8/F, B757-200/300, B767 (all variants), B777 (including ER/LR/F variants), B787 (all variants). DHC-8-Q400, Global Express/XRS, G5000, G6000, G7500, CRJ series (100-1000), LearJet (31A/ER, 40, 45, 60/XR), Challenger (300, 350, 604, 605). Cessna Citation II, Bravo, S/II, Encore/Encore+, Jet 3/4, Latitude, Sovereign/Sovereign+, Citation X/XLS+. E170, E195, EMB-120/135, Praetor 600, Phenom 300. G650/ER, G600, G550, G500, G450, G400, G280, G200, GVII-G500/600. An-12, An-124-100/M. ATR 42, ATR 72. Convair CV-580/5800. Falcon: 7X, 50/50EX, 900 (all versions), 2000/2000EX. IL-76T/TD. Beechjet 400 series, Hawker 400XP. Request Additional Aircraft: if you don’t see your aircraft listed, use the Feedback button in the Info tab to request additions.  Aircraft data is regularly updated to meet user needs.

Radar Performance calculates the geometry of aircraft weather radar beams with respect to the earth, the freezing level, and the band of altitudes that provide the maximum weather radar returns (the "bright band"). It also shows the areas on the radar display where the beam is too high or low to effectively detect active weather and areas where you may see ground returns. Radar Performance also includes an Overfly mode for confirming that the tops of lower-level convective weather remain safely below your aircraft. You choose a safe clearance altitude and a tactical range, and the app calculates the radar tilt at which the bottom of the beam just reaches that altitude at that range. With this tilt set, any weather returns indicate that the tops have penetrated your safety margin, so going around the weather is advised. Overfly mode is available at aircraft altitudes of 15,000 ft and above, and is inspired by Tom McGrath's "Snowplow" technique. Radar Performance supports a variety of weather radar models as well as a "generic" model. It is not specific to any aircraft type.