The M850B Multi-Functional Chronometers are designed to meet the most demanding conditions. These clocks display GMT in 24-hour format, local time in 12 or 24 hour format, flight time, elapsed time, countdown timer. This clock and flight timer also features illuminated two-button control system for simple operation and an automatic dimming, sunlight readable display.
This M850B series chronometer (Alternate Part# M850B-28B) mounts in front of the panel, has a black faceplate, and 28V lighting.
- 2-1/4 inch internal or front mount options availabl
- Two-button control system
- Greenwich Mean Time in 24 hour time
- Local time in 12 or 24 hour time
- Flight time with alarm up to 99:59 hours
- Elapsed time with alarm
- Countdown timer with alarm
- Optional audible alarm
- Bright, sunlight readable display
- Automatic dimming
- Illuminated buttons and annunciators
- Keep-alive battery option
- FAA approved
Product Codes | |
|---|---|
| Mfr Part No: | M850B-28 BLACK FACE PLATE |
Dimensions: 2.375 x 2.375 x 1.46 in, max.LED Display: automatically dimming, sunlight readableBattery Type: CR2032Keep Alive Current: 0.00004 ampsInput Current: 0.2 ampsInput voltage: 14V — 28V
- Stock: Out of Stock
- Manufacturer Part #: M850B-28 BLACK FACE PLATE
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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
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