TITLE VI. TRIALS
Rule 38. Right to a Jury Trial; Demand
(a) Right Preserved. The right of trial by jury as declared by the Seventh Amendment to the Constitution一or as provided by a federal statute一is preserved to the parties inviolate.
(b) Demand. On any issue triable of right by a jury, a party may demand a jury trial by:
(1) serving the other parties with a written demand一which may be included in a pleading一no later than 14 days after the last pleading directed to the issue is served; and
(2) filing the demand in accordance with Rule 5(d).
(c) Specifying Issues. In its demand, a party may specify the issues that it wishes to have tried by a jury; otherwise, it is considered to have demanded a jury trial on all the issues so triable. If the party has demanded a jury trial on only some issues, any other party may一within 14 days after being served with the demand or within a shorter time ordered by the court一serve a demand for a jury trial on any other or all factual issues triable by jury.
(d) Waiver; Withdrawal. A party waives a jury trial unless its demand is properly served and filed. A proper demand may be withdrawn only if the parties consent.
(e) Admiralty and Maritime Claims. These rules do not create a right to a jury trial on issues in a claim that is an admiralty or maritime claim under Rule 9(h).
(As amended Feb. 28, 1966, eff. July 1, 1966; Mar. 2, 1987, eff. Aug. 1, 1987; Apr. 22, 1993, eff. Dec. 1, 1993; Apr. 30, 2007, eff. Dec. 1, 2007; Mar. 26, 2009, eff. Dec. 1, 2009.)

Rule 39. Trial by Jury or by the Court
(a) When a Demand Is Made. When a jury trial has been demanded under Rule 38, the action must be designated on the docket as a jury action. The trial on all issues so demanded must be by jury unless:
(1) the parties or their attorneys file a stipulation to a nonjury trial or so stipulate on the record; or
(2) the court, on motion or on its own, finds that on some or all of those issues there is no federal right to a jury trial.
(b) When No Demand Is Made. Issues on which a jury trial is not properly demanded are to be tried by the court. But the court may, on motion, order a jury trial on any issue for which a jury might have been demanded.
(c) Advisory Jury; Jury Trial by Consent. In an action not triable of right by a jury, the court, on motion or on its own:
(1) may try any issue with an advisory jury; or
(2) may, with the parties' consent, try any issue by a jury whose verdict has the same effect as if a jury trial had been a matter of right, unless the action is against the United states and a federal statute provides for a nonjury trial.
(As amended Apr. 30, 2007, eff. Dec. 1, 2007.)

Rule 40. Scheduling Cases for Trial
Each court must provide by rule for scheduling trials. The court must give priority to actions entitled to priority by a federal statute.
(As amended Apr. 30, 2007, eff. Dec. 1, 2007.)

Rule 41. Dismissal of Actions
(a) Voluntary Dismissal.
(1) By the Plaintiff.
(A) Without a Court Order. Subject to Rules 23(e), 23.1(c), 23.2, and 66 and any applicable federal statute, the plaintiff may dismiss an action without a court order by filing:
(i) a notice of dismissal before the opposing party serves either an answer or a motion for summary judgment; or
(ii) a stipulation of dismissal signed by all parties who have appeared.
(B) Effect. Unless the notice or stipulation states otherwise, the dismissal is without prejudice. But if the plaintiff previously dismissed any federal- or state-court action based on or including the same claim, a notice of dismissal operates as an adjudication on the merits.
(2) By Court Order; Effect. Except as provided in Rule 41(a)(1), an action may be dismissed at the plaintiff's request only by court order, on terms that the court considers proper. If a defendant has pleaded a counterclaim before being served with the plaintiff's motion to dismiss, the action may be dismissed over the defendant's objection only if the counterclaim can remain pending for independent adjudication. Unless the order states otherwise, a dismissal under this paragraph (2) is without prejudice.

(b) Involuntary Dismissal; Effect. If the plaintiff fails to prosecute or to comply with these rules or a court order, a defendant may move to dismiss the action or any claim against it. Unless the dismissal order states otherwise, a dismissal under this subdivision (b) and any dismissal not under this rule一except one for lack of jurisdiction, improper venue, or failure to join a party under Rule 19一operates as an adjudication on the merits.

(c) Dismissing a Counterclaim, Crossclaim, or Third-Party Claim. This rule applies to a dismissal of any counterclaim, crossclaim, or third-party claim. A claimant's voluntary dismissal under Rule 41(a)(1)(A)(i) must be made:
(1) before a responsive pleading is served; or
(2) if there is no responsive pleading, before evidence is introduced at a hearing or trial.

(d) Costs of a Previously Dismissed Action. If a plaintiff who previously dismissed an action in any court files an action based on or including the same claim against the same defendant, the court:
(1) may order the plaintiff to pay all or part of the costs of that previous action; and
(2) may stay the proceedings until the plaintiff has complied.
(As amended Dec. 27, 1946, eff. Mar. 19, 1948; Jan. 21, 1963, eff. July 1, 1963; Feb. 28, 1966, eff. July 1, 1966; Dec. 4, 1967, eff. July 1, 1968; Mar. 2, 1987, eff. Aug. 1, 1987; Apr. 30, 1991, eff. Dec. 1, 1991; Apr. 30, 2007, eff. Dec. 1, 2007.)

Rule 42. Consolidation; Separate Trials
(a) Consolidation. If actions before the court involve a common question of law or fact, the court may:
(1) join for hearing or trial any or all matters at issue in the actions;
(2) consolidate the actions; or
(3) issue any other orders to avoid unnecessary cost or delay.
(b) Separate Trials. For convenience, to avoid prejudice, or to expedite and economize, the court may order a separate trial of one or more separate issues, claims, crossclaims, counterclaims, or third-party claims. When ordering a separate trial, the court must preserve any federal right to a jury trial.
(As amended Feb. 28, 1966, eff. July 1, 1966; Apr. 30, 2007, eff. Dec. 1, 2007.)

Rule 43. Taking Testimony
(a) In Open Court. At trial, the witnesses' testimony must be taken in open court unless a federal statute, the Federal Rules of Evidence, these rules, or other rules adopted by the Supreme Court provide otherwise. For good cause in compelling circumstances and with appropriate safeguards, the court may permit testimony in open court by contemporaneous transmission from a different location.
(b) Affirmation Instead of an Oath. When these rules require an oath, a solemn affirmation suffices.
(c) Evidence on a Motion. When a motion relies on facts outside the record, the court may hear the matter on affidavits or may hear it wholly or partly on oral testimony or on depositions.
(d) Interpreter. The court may appoint an interpreter of its choosing; fix reasonable compensation to be paid from funds provided by law or by one or more parties; and tax the compensation as costs.
(As amended Feb. 28, 1966, eff. July 1, 1966; Nov. 20, 1972, and Dec. 18, 1972, eff. July 1, 1975; Mar. 2, 1987, eff. Aug. 1, 1987; Apr. 23, 1996, eff. Dec. 1, 1996; Apr. 30, 2007, eff. Dec. 1, 2007.)

Rule 44. Proving an Official Record
(a) Means of Proving.
(1) Domestic Record. Each of the following evidences an official record一or an entry in it—that is otherwise admissible and is kept within the United states, any state, district, or commonwealth, or any territory subject to the administrative or judicial jurisdiction of the United states:
(A) an official publication of the record; or
(B) a copy attested by the officer with legal custody of the record一or by the officer's deputy一and accompanied by a certificate that the officer has custody. The certificate must be made under seal:
(i) by a judge of a court of record in the district or political subdivision where the record is kept; or
(ii) by any public officer with a seal of office and with official duties in the district or political subdivision where the record is kept.