“Within the preceding 24 calendar months, each static pressure system, each altimeter instrument, and each automatic pressure altitude reporting system has been tested and inspected and found to comply with appendices E and F of part 43 of this chapter” ~ FAR 91.411
It's YOUR Responsibility to Stay On Top Of Inspections
As a pilot you have likely heard that you are ultimately in control, not the tower. Well, the same holds true as an owner for your airplane's maintenance. Yes, your mechanic is responsible for ensuring airworthiness during Annuals or 100 Hr inspections, but they are not the ones responsible if you take your plane up into IFR conditions when it is past due on your IFR inspections, nor are they responsible to tell you that you're past due!
We see a lot of logbooks and a lot of different airplanes. One scary thing we keep seeing is finding yet another customer who was not current with his/her FAR 91.411 IFR Alt/Static and 91.413 Transponder Check. In a couple examples, we found that he or she had been flying IFR for over 8 months past due on these inspections.
This is very dangerous and it's illegal! Sure, it's possible that you won't get caught by the FAA, and it's possible that your instruments are still accurate, but not getting caught shouldn't be your motive behind anything related to flying/flight safety and what if your instruments are wrong? Your instruments could be telling you altitudes that are way off which could result in slamming into the deck.
Whether you rent or own, take the time to check the aircraft's logbooks to find the most recent 91.411 and 91.413 inspection and if it happened within 24 calendar months, you're likely good to go. If you do own, you can track these using our web portal and receive e-mail alerts to you and your mechanic warning you well ahead of time. You won't even need to take the time to check your logs.
Fly smart. Fly safe. Fly with PlaneLogiX.