Tempest Aviation - Aviation Spark Plug - URHM40E
FAA PMA Part
Description: Aviation Spark Plug
Part Number: URHM40E
Alternate Part Numbers: RHM40E
Approved Replacement for: Allied Signal (Autolite) Part No. SH 200A, Champion Part No. RHM40E
FAA Eligibility: [ Click here ]
Product Overview:
Aircraft spark plugs are responsible for delivering electric current from the ignition system to the combustion chamber. The current is then used to ignite the fuel mixture within the aircraft's internal-combustion engine.
The best spark plugs at the best price
'Fired in' resistor for stable resistance value and smoother running engine
Zero-leakage seal encloses hot, high-pressure combustion gases
Durable nickel finish offers wear and corrosion resistance
Ceramic insulator provides high performance in severe operational conditions
Reduced fouling and enhanced heat range control
Product Features:
1. High Conductivity Copper Core Center Electrode Copper, co-extruded inside a nickel alloy sleeve ensures outstanding heat and electrical conductivity while the nickel sleeve offers high resistance to corrosive combustion gases.
2. Proprietary Glass Center Seal 21st century “fired in” resistor replaces the multipart screw, spring, and carbon pile stack up used in competitive plugs and is known to suffer from resistance value instability that can cause misfires, wasted fuel, and engine roughness.
3. High Alumina Ceramic Insulator High mechanical strength, superior dielectric properties, and proprietary protective glaze provide high performance to conquer severe operational conditions. “Clean Collar” massive electrode “V” tip focuses heat to reduce fouling and enhance heat range control.
4. Nickel Finish Environmentally preferable electrolytic nickel provides an outstanding durable finish, superior corrosion protection, and extreme wear resistance.
5. Nickel Ground Electrodes Aviation grade nickel electrode design focuses on minimizing sparking voltage requirements while maintaining specification gaps to ensure large, stable “flame kernels” for on-time ignition and complete combustion.
6. Vacuum Infused Center Electrode The proprietary vacuum infusion process seals the electrode/insulator gap providing stable heat range and superior center electrode cooling (heat flow to the insulator).
7. Hot-Lock Assembly Intense pressure and heat create positive, zero-leakage, shrunken in the seal between insulator and shell to contain the hot, high-pressure combustion cycle gases.
8. Harness Wire Contact The spring contact surface is smooth, uninterrupted, oxide-treated, and corrosion-resistant. It’s chemically bonded to the fired-in resistor providing the ultimate harness/spark plug termination integrity and energy transfer.
Related Documents:
Tempest Spark Plug Application Guide: [ Click Here ]
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| Additional info | |
|---|---|
| Colors | Chrome |
| Dimensions | |
|---|---|
| Dimensions (W x H x D) | 5.00" × 1.00" × 1.00" inches |
| Length | 5.00" inches |
| Weight | 0.25 lb |
| Specifications | |
|---|---|
| 8130-3 Eligible | Yes |
| ATA Chapter | 71 ATA Powerplant |
| Available Conditions | NE / NS |
| Cage Code | 57N71 |
| Country of origin | United States of America |
| ECCN / USML | 9A991.d |
| FAA Approval Code | PC |
| Hazmat Code | Not Applicable |
| Hazmat(Y/N) | N |
| Material | Nickel alloy |
| Schedule B | 8511.10.0000 |
| Total Shelf Life (days) | Not Applicable |
| Type | Spark Plug |
| Units of Measure (UoM) | Each |
| Brand | Tempest Aviation |
| Color | Chrome |
| Condition status | Depreciated |