Budget director Bert Lance used two airplanes owned by his banks for personal vacations, flying his children to school, commuting and politics, among other things, The Washington Post has learned.

The controls by the banks on the uses of the planes were so loose that even the pilot flew off for vocations at the expenses of one of the banks, according to sources who have seen part of a report by the office of the comptroller of the currency.

The results of the comptroller's investigation of Lance's personal uses of the plane were referred to the criminal fraud section of the Justice Department for possible prosecution.

On Saturday, the Justice Department permitted minority and majority staff members of the Senate Governmental Affairs Committee to review the documentation of the investigation, it was learned from several sources.

The committee is currently holding hearings on allegations of various questionable pratices by Lance when he headed National Bank of Georgia in Atlanta and the Calhoun, Ga., First National Bank. Lance is scheduled to appear before the committee on Thursday and has said he will answer the allegations.

David Schaefer, a member of the staff of the committee chairman, Sen Abraham Ribicoff (D-Conn), confirmed that the staffers had reviewed the plane documents.

"The Justice Department agreed to let us look at it," he said. "We don't have copies and it was done with the understanding that the intermation would not be made public."

Schaefer said he did not know id Lance would be questioned about the planes on Thursday.

The Justice Department soure said that the [WORDS ILLEGIBLE] show the plane documents to the staffers was made to avoid any changes that the department was covering up for Lance. The decision was made at the highest levels of the department.

Another Justice Department source said release of the information does not mean that possible prosecution of Lance is not being pressed. Indeed, this source emphasized that the material turned over by the comproller was still being carefully reviewed by the presecutors.

According to sources, Lance, [WORD ILLEGIBLE] signed interrogatories, admitted to making the various trips in question, but he insisted that each trip was business-related and therefore could be charged to the bank.

If these trips were not business-related, Lance could have problems under the securities and tax laws. For example, the securities laws say that the bank would have to report non-business use of the plane to shareholders as additional compensation to Lance. A review of the financial reports of NBC shows that no such report was made.

Moreover, Lance would have to report any personal use of the plane in

The Post learned that Lance caused NGB to buy from him his personal Beechcraft Queen Air and later to buy for him a more prestigious and expensive Beechcraft King Air.

Lance used the Queen Air while he was with the Calhoun bank. The plane, which costs about $120,000, was owned by Lancelot & Co., a partnership consisting of Lance and his wife, LaBelle. When Lance joined NGB in February, 1975, he leased the plane to the bank until July when the bank bought it from him, according to sources.

Details of this transaction have raised a number of questions, sources say. Among them is the question of the President and chief operating officer of a bank selling an asset to that bank.

In November, 1976, Lance caused the bank to buy a Beechcraft King Air, which carries only one more passenger than the other plane but costs about $800,000. Among its advantages is that it flies faster andhas a presurized cabin.