WEIGHT (P/N 21740-004) - As Removed
P/N: 21740-004
Category: Structural Components
This product requires a custom quote. Please contact our sales team for pricing information or submit an RFQ (Request for Quote).
Available Inventory
| Condition | Stock |
|---|---|
| As Removed | 1 Available |
Product Description
The 21740-004 is a lead weight used for control surface mass balancing in aircraft. This dense metal element positions the center of gravity near the hinge line to prevent flutter and aerodynamic instability. Installed during maintenance or repair procedures on ailerons, elevators, rudders, and other movable surfaces.
After installation, static balance must be verified within manufacturer specifications before the aircraft returns to service. Weight placement follows the aircraft maintenance manual to ensure proper control surface performance and flight safety.
Please note: Product descriptions are provided for informational purposes. Always refer to your aircraft's Illustrated Parts Catalog (IPC) to verify part compatibility and specifications.
Frequently Asked Questions
What is the WEIGHT (P/N 21740-004)?
The 21740-004 is a lead weight used for control surface mass balancing in aircraft. This dense metal element positions the center of gravity near the hinge line to prevent flutter and aerodynamic instability.
Is the 21740-004 a PMA or OEM part?
The WEIGHT may be available as an OEM (Original Equipment Manufacturer) or PMA (Parts Manufacturer Approval) part depending on condition and source. Both carry FAA certification for airworthiness. Currently available in: As Removed. Contact us for sourcing details.
Does the 21740-004 include installation hardware?
Installation hardware requirements vary by application. Check your aircraft's Structural Repair Manual (SRM) or Illustrated Parts Catalog (IPC) for the complete installation kit requirements for the WEIGHT. We stock related hardware and can help identify companion parts.
Can the 21740-004 be shipped internationally?
Yes, we ship airframe components worldwide. International orders typically arrive within 3-14 business days depending on destination. Export documentation and customs forms are included. Contact us for international shipping quotes on the 21740-004.
Related Structural Components
- FITTING – P/N 0841111-3
- FRAME SUB ASSEMBLY – P/N 223-0002-513-01
- BULKHEAD UNIT, CNC MACHINED – P/N c-2294-12p
- SUPPORT – P/N 365a38-3046-01
- SUPPORT-DIODE – P/N 68198-000
- MOUNT RH – P/N 25-ws4048ab
- FIN – P/N 0431004-2
- FITTING AY – P/N 471-6d
- FITTING – P/N 980005-8
- EMGINE MOUNT – P/N 5096-2sa-5
- LEADING EDGE – P/N 25-8ws7-6
- ANGLE – P/N 1379046h19