OPINION
By interlocutory appeal and mandamus, appellants/relators (together, “Trico”) challenge an order granting a motion to com *547 pel arbitration. We dismiss the appeal for want of jurisdiction and conditionally grant mandamus relief.
Background
In October 1996, Trico bought turbine engines from appellee/real-party-in-inter-est Stewart <& Stevenson Technical Services, Inc. (“S & S”). Trico sued S & S and its successor GE Packaged Power, Inc. (“GE”) when the engines allegedly failed.
S & S and GE moved to compel arbitration, and Trico moved to stay arbitration. After a non-evidentiary hearing, the trial judge compelled arbitration after denying Trico an evidentiary hearing. The trial judge did not file fact findings or legal conclusions.
Interlocutory Appeal (Our Cause No. 01-01-01067-CV)
S & S and GE have moved to dismiss Trico’s interlocutory appeal.
S & S and GE’s arbitration motion referred to both the Texas General Arbitration Act (“TAA”)
1
and the Federal Arbitration Act (“FAA”),
2
and the trial judge did not state which act applied. We hold the FAA controls. Trico’s principle places of business are in Louisiana and Brazil, while S
&
S’s is in Texas. Trico alleged the turbine engines were for an ocean-going vessel that would be chartered by Brazil’s national oil corporation to transport oilfield crews off the Brazilian coast. This contract therefore concerns both a “maritime transaction” and a “transaction involving [foreign or interstate] commerce,” either of which requires the FAA’s application. 9 U.S.C. § 2 (2001) (applying to arbitration provisions in these transactions);
see In re L & L Kempwood Assocs., L.P.,
Accordingly, we dismiss Trico’s interlocutory appeal. We further deny S & S and GE’s motion for sanctions because (1) their own arbitration motion cited both the TAA and FAA and (2) as mentioned above, the Texas Supreme Court opinion in
Jack B. Anglin Co. v. Tipps
contained dictum suggesting that an appeal might lie.
See id.,
Mandamus (Our Cause No. 01-01-01239-CV)
In issue one, Trico argues arbitration is improper because the contract did not contain an arbitration clause. In issue two, Trico contends the trial judge erred in denying an evidentiary hearing on whether a document containing an arbitration clause was attached to the contract. We sustain both issues, although we do not grant all of the relief Trico requests.
2. Law of Arbitration and Standard of Review
We review for clear abuse of discretion.
Anglin,
“A party cannot be required to arbitrate unless it has agreed to do so.”
Hou-Scape, Inc. v. Lloyd,
2. Incorporation by Reference
The contract consisted of two documents: (1) an unsigned commercial proposal for the engines dated October 14, 1996 (“the Proposal”) and (2) a signed purchase order confirmation dated October 15, 1996 (“the Confirmation”). 4 The par *549 ties’ dispute also involves a separate S & S document, entitled “General Terms & Conditions of Sale” (“the GTCS paper”), which contained an arbitration clause. 5 S & S and GE asserted (1) the GTCS paper was physically included as a sixth and final page of the Proposal, and thus of the contract, at the time of contracting and (2) even if the GTCS paper was not physically attached, the contract — specifically, the Proposal — incorporated the GTCS paper by reference.
Trico denied that the GTCS paper was attached to the Proposal at the time of contracting. Trico’s evidence showed the Proposal had only five pages and no attachments. This is important because arbitration was not mentioned in the Confirmation or in the Proposal (if the Proposal had only five pages), but arbitration was mentioned in the GTCS paper. Thus, there was a disputed material fact issue.
To avoid an evidentiary hearing on what it conceded was a factual dispute about the GTCS paper’s attachment, S & S and GE stipulated (for that hearing only) that the GTCS paper was not physically attached to the Proposal. Because the GTCS paper was stipulated not to have been attached, arbitration was proper only if, as a matter of law, the Proposal incorporated the GTCS paper by reference. The trial judge agreed with S & S and GE that, as a matter of law, the Proposal incorporated the GTCS paper by reference.
And so we turn to the Proposal’s terms. S & S and GE’s incorporation-by-reference argument relied entirely on two references in the Proposal to “General Terms and Conditions of Sale” — the same words that appeared at the top of the GTCS paper. In the Proposal, the heading “VII. General Terms and Conditions of Sale” appeared (1) in the table of contents and (2) at the bottom of page five. An inch of blank space appeared below page five’s heading VII.
“[A]n unsigned paper may be incorporated by reference into a paper signed by the person sought to be charged. The language used is not important provided the document signed by the defendant plainly refers to another writing.”
Owen v. Hendricks,
We hold that the mere mention of “General Terms and Conditions of Sale” in the Proposal’s table of contents, and again as heading VII, does not plainly refer, as a matter of law, to any separate document. An inch of blank space follows page five’s heading VII. It is not enough that the Proposal’s heading VII and the external
*550
document have the same title. Before heading VII can incorporate something by reference, it must first make a reference. And that reference must be “plain.”
See Owen,
We distinguish the cases on which S & S and GE rely. In
MTrust Corp. N.A. v. LJH Corp.,
the contract expressly referred to an “Exhibit ‘B’ attached hereto and incorporated herein by reference for all purposes,” a much more specific reference than here.
We also distinguish
In re AGC Cotton Marketing, L.L.C.,
on which S
&
S and GE rely.
Nor do we agree with S & S and GE’s claim that our interpretation leaves heading VII meaningless.
See Blaylock v. Am. Guarantee Bank Liab. Ins. Co.,
3. Conclusion
We hold the trial judge abused his discretion by implicitly holding that this particular text constituted, as a matter of law, Trico’s agreement to arbitrate. We thus sustain this portion of issue one.
4. Evidentiary Hearing
Trico asked for the judge (1) to deny S & S and GE’s motion to compel arbitration and (2) to grant Trico’s own motion to stay arbitration. Alternatively, Trico requested an evidentiary hearing under Tex. Crv. PRAC. & Rem.Code Ann. §§ 171.021(b) and 171.028(b). We hold that an evidentiary hearing is required.
Trico contended that, because of S & S and GE’s one-time concession that the GTCS paper was not attached, the trial judge should deny arbitration as a matter of law since there was also no incorporation by reference. On appeal, Trico contend that, even if the GTCS paper was attached, the GTCS paper still did not become part of the Proposal because of the lack of “incorporation” language in the Proposal. This latter argument was not presented to the trial judge, and even if it had been, the circumstances would not justify a holding by us that, as a matter of law, arbitration should be stayed.
S & S and GE did not argue below that the GTCS paper was attached to the Proposal as an exhibit, but that the GTCS paper
actually constituted page six of the Proposal, i.e.,
that the text for page five’s heading VTI (“General Terms and Condi-. tions of Sale”) was found on page six, which was the GTCS paper. As stated, Trico denied that and presented controverting evidence on that material fact. That dispute required an evidentiary hearing.
See
Tex. Civ. Prac. & Rem.Code Ann. §§ 171.021(b), 171.023(b);
Anglin,
Nor would a stay of arbitration be supported by
Milam Development Corp. v. 7*7*0*1 Wurzbach Tower Council of Co-Owners, Inc.,
We sustain issue two. We overrule that portion of issue one requesting we issue the writ to stay arbitration.
Accordingly, we conditionally grant the writ and direct the trial judge (1) to vacate his order compelling arbitration and (2) to conduct an evidentiary hearing to determine the disputed facts relevant to the issues permitted under sections 171.021(b) *552 and 171.023(b). We are confident the trial judge will comply with this order. Therefore, we need not issue the writ at this time.
Notes
. Tex Civ. Prac. & Rem.Code Ann. §§ 171.001-.098 (Vernon Supp.2002).
. 9 U.S.C. §§ 1-16 (2001).
. We thus need not reach the issue, briefed by the parties, of whether the TAA allows interlocutory appeal of orders granting an application to compel arbitration.
Compare Jack B. Anglin Co. v. Tipps,
. Trico contends the unsigned Proposal was not sufficiently incorporated into the signed Confirmation for the two documents to constitute one contract. Its argument below, however, focused on the incorporation of a Aird document into Ae Proposal, not Ae Proposal's incorporation into Ae Confirmation. Additionally, neither Trico’s motion opposing arbitration, nor Ae affidavits supporting that motion, argued that the contract did
*549
not consist of two documents, and the affidavits strongly imply the opposite. Therefore, for purposes of this opinion, we consider it undisputed that &e Proposal and the Confirmation
together
constituted
one
contract. Consequently, it does not matter that the Proposal was unsigned; the Confirmation that incorporated the Proposal was signed, and the trial judge could have reasonably concluded that the two documents were legally one.
Cf. Milam Dev. Corp. v. 7*7*0*1 Wurzbach Tower Council of Co-Owners, Inc.,
. We must presume for this opinion, based on S & S’s and GE's concessions made in the trial court and discussed below, that the GTCS paper was a separate document from the contract.
. Despite the "argument only” qualification noted above, later, possibly contradictory language suggests the court may have believed the language actually sufficed for incorporation, see id. at 634-35.
