The M811B Digital Clock is a multi-functional chronometer designed to operate under the most stringent operating conditions. It features three independent 6-digit solid state timing circuits: time, flight time, and elapsed time which can be controlled by the pilot. The incandescent display is readable in sunlight. Version 811B-1 has the ability to adjust local time to 12 hour or 24 hour setting.
NOTE: 28V install requires the 811-28 Dropping Resistor (sold separately).
- 2 ¼" internal mount
- Six-digit display on all 3 functions
- Local time 12 hour or 24 hour (user selectable)
- 24 hour flight time
- 24 hour elapsed time counter
- Sunlight readable display
- Memory battery included
AI disclosure: this description was generated with AI assistance from this product's own listing data.
Product Codes | |
|---|---|
| Mfr Part No: | 811B-1 |
| ECCN: | 7a994 |
| NSN: | 6645-01-074-2889 |
| PMA: | PQ1062NM |
| SCHEDULE B CODE: | 9104.00.0000 |
| SIN: | 334511 |
Weight: 7.5 ozInput current: 0.4 ampsInput voltage: 14 vNVIS option: NVIS green A lightingLocal time: 12-hour or 24-hour (user selectable)Flight time: 24 hourElapsed time count up: 24 hourBattery type: 6 volt battery with 2-year operating life
- Stock: Warehouse
- Manufacturer Part #: 811B-1
Aircraft Fitment Finder
Returns & refund summary
- 30-day return window — with prior return authorization, unopened in original packaging.
- Restocking fee: 20% on unopened items, 30% on open-box items.
- Refund processing fee: 5.51% applies only to customer-remorse returns and customer-initiated cancellations. If a problem is our fault (our cancellation, unavailability, wrong item, confirmed defect, or shipping damage) your refund is 100% with no fees.
- Return shipping: paid by buyer on customer-remorse returns; we pay return shipping when the problem is our fault.
- Non-returnable categories: installed/used parts, special-order or rebuilt items, programmed items (incl. ELTs), batteries, AOG-priority orders, international orders.
Full terms: Return Policy.
Authenticity & authorization
We source products from manufacturers, authorized distributors, and established aviation suppliers as applicable. We are an independent reseller; we do not claim direct dealer or authorized-representative status for any brand. Documentation, source, and warranty eligibility vary by product and are confirmed on request.
See our full Manufacturer Authorizations page for the current per-brand status.
Need traceability paperwork?
If your installation requires FAA Form 8130-3, manufacturer Certificate of Conformance, or other traceability documentation, please call 1-877-722-8727 or email [email protected] before placing the order so we can confirm what is available for this part.
Shipping
Standard ground, expedited, and AOG shipping options are available at checkout. Full shipping-cost tiers and timelines are published on our Delivery Information page.
