SEA AOG Services Contact: (321) 704-2960

Please verify availability of Stock item on before contacting AOG services

  • AOG Fee is $200; non-negotiable, non-refundable for all transactions, including warranty situations   • AOG service only available for items listed as “Stock” on Part Sales section of (or
  • • AOG (Aircraft on Ground) is defined as emergency requirement needed after normal Southeast Aerospace (SEA) business hours   • SEA normal business hours are Monday – Friday 8:00 AM – 5:00 PM Eastern Standard Time, excluding national holidays
  • Note: SEA can ship UPS or FedEx on Saturday until 12pm EST, Delta Dash on Saturday until 2pm EST. After these deadlines, you must arrange for your own courier service and/or shipment
  • • Buyer is responsible for all transportation fees    • All AOG transactions are with pre-established Net 30 accounts or credit card payment terms
  • • Hazmat shipments not available for AOG service   • All AOG shipments are “EX-Works” Melbourne Florida USA; buyer bears all costs and risks of goods from shipping point
  • • All standard SEA terms & conditions apply   • All AOG transactions are final and subject to approval by SEA personnel

NOTICE - This policy must be signed & returned to SEA before any AOG services are rendered - Download PDF

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Condition Price Delivery Action
NEW OUTRIGHT Call or RFQ Subject to Factory
Valid as of 05/04/16 14:02:02 EST



DK140 DK Series
(DK120 image shown due to similarity)

  • Underwater Acoustic Beacon
  • 2.97" Length Beacon with Field Replaceable Battery
  • Extended useful life
  • Designed to provide outstanding performance and reliability
  • Utilizes improved low voltage technology
  • Single cell, non-hazardous battery
  • Six year battery life
  • UL recognition, Solid cathode chemistry battery
  • Less active, more stable chemistry
  • High tolerance for rough handling
  • Manufactured to high quality design and test standards
  • Meets or exceeds all the FAA requirements without the need of any modification
    to existing mounting hardware (TSO-C121)
  • Operational in water up to 20,000 feet
  • Sealed Unit


Operating Frequency: 37.5 kHz ± 1 kHz Operating Depth:  Surface to 20,000'
Pulse Length: Not < 9 milliseconds Pulse Repetition Rate: Not < 0.9 pulse per second 
Useful Life: 6 years  Operating Life: 30 Days (min)
Acoustic Output
1060 dynes/cm2rms pressure @ 1 meter Acoustic Output
After 30 Days:
700 dynes/cm2rms pressure @ 1 meter
Operating Temperature: 28°F to 100°F Actuation:  Fresh or salt water, surface to 20,000'
Radiation Pattern: Rated output over 80% of sphere Size: 1.3" D x 2.97" L
Weight: Less than 4.9 oz (including battery) Power Source:  Lithium Battery Field Replaceable
FAA Authorized: TSO-C121     
Part NumberUnderwater Acoustic Beacons Description:
DK100 4" Length Beacon
DK120 4" Length Beacon w/Field Replaceable Battery
DK130 2.97" Length Beacon
DK140 2.97" Length Beacon w/Field Replaceable Battery


Please note that the content on this page is for reference only. It is the responsibility of the installer or installing agency to determine the ultimate eligibility of a part for installation.
Availability details valid as of 05/04/16 14:02:02 EST

Part #: DK140 Underwater Locator Beacon
Condition Price Delivery Action
NEW OUTRIGHT Call or RFQ Subject to Factory
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DK-140 Product FAQ

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Item is not available for over-the-counter(OTC) sale and must be installed by Southeast Aerospace.

If you are interested in an installation quotation, please click here.