Quartz Analog Clock | Electric, 8-32V, Non-Lighted
The MD90 Series aircraft clocks have precision 12-hour format with solid-state quartz movements that meet rugged aircraft environmental standards.
Version (Alternate Part# MD90) is an electric quartz 8-32V analog clock and does not have lighting.
- Precision quartz movement
- Compact 2-inch size — fits standard panel cutout
- Transient and reverse polarity protected
- Original equipment for many major aircraft manufacturers
- Low power consumption (3 mA)
- Continuously powered by aircraft battery
- FAA PMA certified
Product Codes | |
|---|---|
| Mfr Part No: | MD-90-1 |
| ECCN: | 9A991 |
| PMA: | PQ3738CE |
| SCHEDULE B CODE: | 9104.00.0000 |
Weight:
0.5 lbsDimensions:
2.5 x 2.5 x 3.2 inches maxPower Input:
8–32 VDC
3 mA max (without lighting)Accuracy:
±30 seconds in 24 hrsTemperature:
–40°C to +82°C (–40°F to +180°F)Altitude:
–1,000 to +55,000 feetHumidity:
0 to 95% at 25°CVibration:
.02 in. dbl. ampl., 1.5g @ 5 to 50 HzCertification:
FAA PMA certifiedMounting:
Front or rear panel mountedConnector:
#6-32 threaded terminals
- Stock: Out of Stock - On Backorder
- Manufacturer Part #: MD-90-1
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 to all refunds (returns, cancellations, core-fee refunds) regardless of reason.
- Return shipping: paid by buyer.
- 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
All parts sold by American Aviation Parts are genuine factory products sourced through authorized distribution channels. Our authorization status varies by brand — for some brands we are a direct authorized dealer; for others we are an independent reseller through authorized distribution. Either way, the part you receive is the same factory product, with standard documentation available 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.
