Part# 11-10056


Miniature Bayonet Based T3 1/4 LED Lamp. A bright LED for direct replacement of Miniature Bayonet Based incandescent lamps. It has a built-in diffuser for wide angle viewing. A molded diffuser lens increases the viewing angle making this LED more suited for use behind larger displays, switches or lens covers. Long-life, low power consumption, shock resistance, and extreme thermal tolerance make LEDs ideal for harsh industrial environments. Available in Clear or Red.

Replaces miniature lamp: # 6MB, 44, 47, 755, 1302, 1847 (5/6v); 12MB, 57, 386,756, 1445, 1815, 1889, 1893 (12/14v); 1437, 24MB (24V); 28MB, 313, 757, 1819, 1820, 1829 (28V); 48MB (48V); 60MB, 1835 (60V); 120MB, NE51H, 967 (120VAC); 130MB (130V).
California Prop 65 Warning Symbol

WARNING: The product may contain and/or expose you to a chemical(s) or substance(s) which are known to the State of California to cause cancer and/or birth defects or other reproductive harm. www.P65Warnings.ca.gov


  • Up to 90% Energy Savings Over Incandescent Lamps
  • Long Life, 100,000 hrs., Over 10 years
  • Increased Safety, No glass that can shatter
  • Reduced Relamping Labor Costs
  • Shock and Vibration Proof
  • Lower Operating Temperature


  • Lamp Shape: T3 1/4
  • Base Style: Miniature Bayonet BA9S
  • Length MOL: 1.10"
  • Diameter MOD: 0.40"
  • Current: 20ma
  • Operation: AC or DC


These are great replacement bulbs, and they dim!

Moon S Verified Purchase


October 30, 2021

These were an excellent LED replacement for our stock instrument panel bulbs, and they are dimmable. Work and look great.

Joseph W
November 20, 2020

The comment about the plastic rim is a fair point. Other than that, these bulbs are great. No electrical noise from them in my audio system (sometimes LED drop in replacements apparently cause that). The bulb material itself is rugged and grips better than glass, in case you have to be creative with your fingertips and/or needlenose pliers for bulbs that go in awkward, hard to reach places. Or so Ive heard...

Jim C
October 17, 2016

These are great replacement bulbs for the incandescent bulbs. I gave it a 2 star because of the 9 bulbs I purchased, only three fit my military press-to-test indicators. The remaining 6 had to be turned down on a lathe to fit the holder. Cause: There is a white ring between the metal base and the plastic dome. This ring is too large a diameter to fit the holder. After reducing the diameter to that of the dome itself, all the bulbs fit and functioned fine.

Michael S
May 13, 2016

Very, very dim.... pretty much useless

May 15, 2020

Very Dim, I thought by using an LED light in the cabin it would be brighter. The original regular bulb is 5 times brighter!

Vincent R
January 14, 2019

Very dim. About 1/4 the light output compared to the incandescent. Not useable as instrument lights.

January 22, 2018

I was replacing my instrument lighting. There are a total of 10 red bulbs under the instrument panel sun visor. These led bulbs are not bright enough to light up my panel. Totally unusable.

April 20, 2017


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: Will these LED replacement minature lamps work with a standard dimmer to reduce the brillance at night? Regarding part numbers 11-09628 and 11-10056

Per the manufacturer, these are not designed to be dimmed. They will not be dimmed significantly, if at all.

Q: Are these lights FAA approved?

No, these lights are intended for experimental aircraft only.