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ICON released three Service Bulletins last week related to the Nose Landing Gear uncommanded retractions. It took me a little while to sort them out.

SB-012624-A NLG Limit Switch Over-Engagement (Mandatory)
This SB provides updated rigging instructions and design improvements for the new Retrofit Limit Switches that came out in October 2023 (SB-080323). If you don't have the new Limit Switch this is not required. An inspection is due within 5 runway landings; if the inspection passes the repair can be deferred to next condition inspection.

SB-032420-C Recurring Inspection of Nose Landing Gear (NLG) Actuator Rigging
This inspection is now due every 50 hr or 6 months (whichever comes first), instead of every 100 hr or annual condition inspection. The inspection is not required if either SB-080323 or SB-012724 (NLG Limit Switch Retrofit) have been completed.

SB-012724 NLG Limit Switch Retrofit
This is a new version of the NLG Limit Switch Retrofit SB (mechanical limit switches with long arms). It replaces SB-080323 and incorporates the updated rigging instructions and a design improvements included in SB-012624-A. You don't need to do this if you have already done SB-080323 (instead you do SB-012624-A). It is due at the next service interval. Once you perform this SB, you don't need to do the recurring Inspection required by SB-032420-C.

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ICON released three Service Bulletins last week related to the Nose Landing Gear uncommanded retractions. It took me a little while to sort them out.

SB-012624-A NLG Limit Switch Over-Engagement (Mandatory)
This SB provides updated rigging instructions and design improvements for the new Retrofit Limit Switches that came out in October 2023 (SB-080323). If you don't have the new Limit Switch this is not required. An inspection is due within 5 runway landings; if the inspection passes the repair can be deferred to next condition inspection.

SB-032420-C Recurring Inspection of Nose Landing Gear (NLG) Actuator Rigging
This inspection is now due every 50 hr or 6 months (whichever comes first), instead of every 100 hr or annual condition inspection. The inspection is not required if either SB-080323 or SB-012724 (NLG Limit Switch Retrofit) have been completed.

SB-012724 NLG Limit Switch Retrofit
This is a new version of the NLG Limit Switch Retrofit SB (mechanical limit switches with long arms). It replaces SB-080323 and incorporates the updated rigging instructions and a design improvements included in SB-012624-A.

You don't need to do this if you have already done SB-080323 (instead you do SB-012624-A). It is due at the next service interval. Once you perform this SB, you don't need to do the recurring Inspection required by SB-032420-C.

Thanks for sorting this out. My annual is this week and I do NOT have the new switches so I will report back on how it goes. I am hoping I get my new Prop/VGs as well. More to come!

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Thanks Marcus! Appreciate you sorting this for all of us!

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Having one older and one newer Icon we had to do both the easier long arm conversion to 198 and the install new long arm switches and decommission the internal prox switch on 111 SD. These are not difficult to do and the instructions are very well done. One thing we did notice is if the limit switches are initially not set quite right it will blow the fuse for the actuator when it binds against the stop the slightest amount. This made me think if a limit switch ever failed or went out of rig i might blow the fuse and not have a nose gear. The lesson i think is before i would replace that fuse in flight put the gear handle the opposite way from the direction that blew the fuse then install the fuse and you will get a down gear.