Rule 51.Jury instructions; objections; preserving a claim of error.
Last verified July 1, 2026
Full Text of Rule 51
Amendment History
Promulgated by R-16-0010, effective January 1, 2017.
Plain-English Summary
A party may file written requests for jury instructions before or during trial, and can request additional instructions after the close of evidence if the issue could not reasonably have been anticipated earlier, or with the court's permission for any issue. Instructions should be understandable to people unfamiliar with the legal system, and each juror gets a written copy of the preliminary and final instructions before they are read. Before instructing the jury and before closing arguments, the court must tell the parties what it plans to instruct and how it has ruled on their requests, and must give them a chance to object on the record, outside the jury's hearing.
This is where Rule 51 changed in 2017: instead of Arizona's older practice of allowing objections anytime before the jury retired to deliberate, the rule now requires a party to object at that pre-instruction opportunity, or promptly after learning of an instruction or ruling it wasn't told about beforehand. A party can only raise an instructional error on appeal if it properly objected to an instruction the court gave, or properly requested and objected to an instruction the court refused to give. Fundamental error is a narrow exception that a court may still consider even when it wasn't preserved this way.
Frequently Asked Questions
When do I have to object to a jury instruction to preserve the issue for appeal?
Before the instructions and closing arguments are delivered to the jury, at the opportunity the court gives the parties to object — or promptly afterward if you weren't told about the instruction or ruling beforehand.
Does a general objection like "I object to that instruction" preserve the issue?
No. You must state distinctly what you're objecting to and the grounds for the objection.
Can I still raise an instructional error on appeal if I didn't object?
Only under the narrow fundamental error doctrine, which courts apply sparingly and generally reserve for errors that deprive a party of a fair trial.
Did Arizona always require objections before the instructions were read to the jury?
No. Before a 2017 amendment, parties could object anytime before the jury retired to deliberate. The current rule adopted the federal approach requiring earlier objections.