Features & Specifications of EDM 800 include:

• Easy front panel programming by the pilots
• 24 Pilot programmable alarm limits via front panel
• No more calculating - displays both leaned temperatures below peak and peak.
• Just 2 ¼” installation space required.
• LeanFind™ is a true peak detect technology that finds the first and last cylinder to peak
• Fuel flow data for single 6-cylinder engine.
• Built in alarm triggered by unusual battery voltage
• EGTs with up to 1°F resolution data
• EGT with DIF low to high alarm
• Pilot sele ... Read more »

I once had this dream actually, a nightmare - I was flying my Cessna 152 over Florida Keys enjoying both the flight and the views when all of a sudden, I saw there were no engine monitors or gauges in the cockpit. My panic was so acute that I woke up with my heart pounding and then thanked my stars it was only a nightmare.

Those of us who are used to flying with data monitors, GPS and a handful of gauges, know how much we depend on them to know not just the health status of the aircraft but also our current geographic location, height etc.

I remember that in comic books as well as WWII films pilots would know something was wrong just by listening to the difference in en ... Read more »

For the uninitiated, the gas turbine you see in the single and twin-engine aircraft is an internal combustion engine that uses air to drive the engine and propeller, which in turn, propels the airplane. It achieves this with the help of heat energy from fuel that it converts to mechanical energy via the pistons.

Here's how the gas turbine combines with the compressor:

1. Intake of air
2. Compression of the air
3. Air is mixed with right quantity of fuel and ignited.
4. Energy release in above process is used to drive the plane forward.

Now just as a car engine gets hot and needs to be kept cool, ditto the aircraft engine. In f ... Read more »

A single or twin-engine aircraft cockpit jampacked with gauges of different types and sizes might look awesome or look like a spaceship to passenger or friend you are trying to impress but for the pilot – they are a pain to keep track of during a flight. The pilot can’t possibly be keeping track of all the gauges and also fly the plane at the same time.

True, each gauge provides vital information on a particular part of the aircraft engine. This reminds us of wrist watch – most of them even today, display just the time. Newer models display time and date – maybe even the day of the week. Still newer models incorporated a chronograph, a stop ... Read more »

This document assumes your general familiarity and knowledge of aircraft engines and its systems. If you are not familiar with it, please seek the services of an authorised aircraft maintenance engineer.

Installation of the JPI manufactured Fuel Scan 450 in cockpit panel:

Locate / create a 2.25 or 3.125 diameter hole in the instrument panel, where you would like to mount the indicator. The instrument configures itself automatically for 14 or 28 volt aircraft systems. The depth required for the instrument is 1.5 inches (less connectors) and is 2.6 or 3.5 square behind the panel.

Wiring from sensors to the cockpit:

... Read more »

Single Engine Management Systems

J.P. Instruments manufacturers the following models in single engine management systems for aircraft:

EDM 350, EDM 830, EDM 730, EDM 900 Primary, EDM 930 Primary, EDM 950, EDM 700, EDM-930 Experimental, EDM 930 Experimental and EDM 800

The EDM 350 is designed for Experimental Aircraft, is very compact, features full customization and includes the legendary JPI quality and accuracy. Amongst Engine Data Management Systems for single engine aircraft, this model is the most cost effective and reliable.

TSO’d for quality, the Engine Data Management ... Read more »

Oftentimes, two or more products might have near identical specifications and you as a customer, are left wondering which model to purchase. This article is aimed at those trying to decide between Engine data monitor EDM 730 and the EDM 740.

Although both Engine Data Monitors are manufactured by J.P. Instruments, USA, the EDM 740 is for experimental aircraft only.

Engine data monitors provide the pilots and the aircraft maintenance crew with real time information for the aircraft. Both EDM 730 and EDM 740 constantly monitor the health of the aircraft engine and any anomalies are instantly brought to the pilot’s ... Read more »

The J.P. Instrument manufactured Classic Scanner is perfect for any plane. The Classic scanner is a small convenient package with an even more convenient price tag.

The Classic Scanner has been in the market for over 20 years, and its reliance and durability is the best in the market.

Easy on the pocket, easy to install and use, the large red LED display also make it very easy to read in all conditions. The Classic Scanner is flawlessly accurate.

The Classic Scanner scans CHT and EGT temperatures (in degrees Fahrenheit or Centigrade), and both include alarms. The Classic Scanner is paired with JPI’s famous super acc ... Read more »

The EDM 800 puts the fun back into flying because as a pilot, you don’t have to spend bulk of the flight time staring at a bunch of dials to ensure the aircraft engine is functioning normally; the EDM 800 does this task for you.

Using the latest microprocessor technology, the EDM 800 monitor up to twenty-four critical parameters of the aircraft engine and it does this four times a second.

Superior to the EDM 700, the EDM 800 includes fuel flow monitoring and a host of other features. As before, leaning is accomplished automatically using the Lean Find procedure. With the EDM 800 you have more engine diagnostic information available. In fact, the EDM 800 re ... Read more »

Data from the OAT probe on aircraft can be used in several calculation such as flight planning, aircraft take-off performance, cruise performance, density altitude and so forth.

In modern day aircraft, external air temp obtained via the Outside Air Temperature (OAT) probe, for the basic input for air data computers. There are two things to be kept in mind; one, the Static Air Temperature, or SAT, i.e. the temperature of the undisturbed air through which the aircraft will fly and second, the air temperature as the aircraft flies through it. This latter temperature is always a bit higher than the former (dur to kinetic energy is converted to heat at the sensor). ... Read more »