of the present case, plain error in this sense resulted from the district court’s failure to give a cautionary accomplice instruction.
The Factual Context
On the weekend of November 24-25, 1979, Jordan (the alleged accomplice) stole the tractor in Oklahoma City and loaded it onto a trailer hitched to his pick-up truck. On the following day, after Jordan drove directly with the tractor on the trailer to the defendant Jones’ place of business in Fort Worth, certain papers (including false bills of sale) were filled out at Jones’ direction. As earlier noted, the subsequent events undoubtedly amounted to corroborated proof that Jones knowingly received the stolen tractor (Count 2); but, as argued by the appellant Jones, this evidence as to post-delivery conduct by Jones does not (aside from the testimony of Jordan) necessarily constitute evidence that he had knowingly caused the prior interstate transportation (Count 1) — rather, this evidence proves only that he made efforts to conceal his post-delivery receipt of the stolen property.
To prove pretheft involvement by Jones — essential to proof of guilt under Count 1 that he had caused the interstate transportation of a stolen motor vehicle— the government did indeed rely principally upon the testimony of Jordan, the alleged accomplice, who had pleaded guilty and was a cooperating government witness. The issue is whether that testimony was so unreliable and so uncorroborated in the Williamson-Tillery sense as to require the trial court, without request for it, to give a cautionary instruction to the jury that expressly instructed it to require corroborating evidence before giving credence to questionable testimony of this nature. This issue arises, however, in the context of general instructions that were intended to alert the jury that, in weighing the putative accomplice Jordan’s credibility, they could take into account any interest he himself might have arising out of his plea bargain with the government, as well as the reflection upon his truthfulness arising from his given prior felony-theft convictions.
As to Jones’ pretheft involvement, Jordan testified as follows:
1. On November 9 (about three weeks before the theft), Jordan — in the course of purchasing a pick-up truck from Jones in Dallas — inquired if Jones would be interested in buying a tractor that Jordan had located in Oklahoma City. Jones replied that he was interested and that he would buy it or help Jordan sell it (for a commission), if Jordan brought it down.
2. At that time or later, Jones agreed to furnish Jordan a trailer to transport the tractor. The day before the theft, Jordan drove down to Fort Worth from Oklahoma City and picked up the trailer, returning it with the tractor after the theft. (At this point, we should note that, while Jordan did bring the trailer from Oklahoma City to Fort Worth, outside of his own testimony there is no evidence that, prior to that time, the trailer had ever been in Fort Worth on Jones’ premises, or that it had been furnished to Jordan by Jones before the theft. To the contrary, the former Jones’ employees — who were testifying as government witnesses and who displayed some resentment towards Jones — testified that they had never seen the trailer on Jones’ various business premises before Jordan brought the trailer with the tractor to Fort Worth.)
3. Shortly before the theft, Jordan telephoned Jones from Oklahoma City and told him he had located the tractor. Jones agreed to pay Jordan five thousand dollars cash for the tractor when the latter brought it to Fort Worth.
In determining whether it was plain error under the present facts not to give the cautionary accomplice instruction, we first note that, unlike in Tillery and Williamson, the accomplice’s unreliability here is not based on conflicting versions shifting the blame in the criminal incident or on cumulative pretrial and trial instances indicating error and confusion. See, e.g., United States v. Beasley, supra, 549 F.2d at 242-43. See also United States v. Hinds, supra, 662 F.2d at 370-71. Here, in the main, in his pretrial accounts the accomplice Jordan implicated Jones consistent with his