The jet, a Global Express XRS plane, is allegedly chartered specifically for her private and official trips overseas.
A return trip on the XRS plane is said to cost taxpayers €600,000.
The jet is different from the Challenger 850, which the House of Representatives said gulped N10bn in the last two years to fly the minister.
Investigation by The PUNCH showed that the House Committee on Public Accounts stumbled on the second jet in the course of the ongoing probe into the N10billion expenditure on Challenger 850.
Findings also showed that the owners of Challenger 850 might have fled the country shortly after the House ordered an investigation into the transaction between them and Alison-Madueke.
It was gathered that the aircraft owners reportedly became jittery after the committee declared its plan to summon them to assist in the investigation.
The PUNCH had reported exclusively last Sunday that the committee would summon the owners of the plane to testify before it.
Asked to comment on the issue, the Chairman of the committee, Mr. Solomon Olamilekan, told our correspondent that he was “shocked by the latest information.”
“We have heard that the owners of the Challenger have hurriedly left the country. The information is just reaching the committee; but, we are still holding our preliminary meetings,” he stated.
Olamilekan, who confirmed that the committee had uncovered a second jet, added that they were trying to establish how many trips it made outside the country.
“We are still holding our preliminary meetings. We have to put all the facts together and agree on the mode of the hearing first.
“The question on when to invite the minister will come after the meetings. We are still meeting.”
However, a document our correspondent obtained in Abuja on Tuesday, indicated that Alison-Madueke flew in Global Express XRS on two occasions in 2011.
She chartered the same jet twice in 2013 on a return trip bill of €600,000 per trip.
For example, on March 21, 2011, she flew to London with the jet from the Nnamdi Azikiwe International Airport, Abuja.
On board the jet with her were two people, Imotimi Agama and Haruna Momoh.
The aircraft returned to Nigeria from London on March 23, conveying the same passengers.
Another trip on March 9, 2013 departed the Murtala Muhammed International Airport, Lagos en route to London.
The passengers were Alison-Madueke, Abubakar Fari and Momoh. The jet returned to Nigeria on March 13 with the same passengers.
In Abuja, lawmakers are asking how a serving minister raised the money to charter jets for overseas trips at the expense of the taxpayers.
One of them, who asked not to be named said, “Nigerians deserve to know which law authorizes this type of extravagance.
“Under which budgetary sub-head has she been chartering jets for her personal use?
“Where is the law that authorises a government minister to be flying around the world in chartered private jets?
“You are going to London, why did you not not use the British Airways or any other international airline?”
The PUNCH further learnt that those who accompanied Alison-Madueke on the trips would also be invited by the committee to assist with the investigation.
Alison-Madueke is accused of spending about €500,000 monthly to maintain the first aircraft.
The Nigerian National Petroleum Corporation had on Monday denied the allegation but said it had the legal right to own or charter an aircraft for its operations.
“This practice is common and acceptable in the local and international business environment in which it operates. There is nothing prohibiting the NNPC from owning or chartering an aircraft,” the NNPC had said in a statement by its Acting Group General Manager, Public Affairs Division, Omar Ibrahim.
There was however a new twist to the N19.7bn Police Equipment Fund on Tuesday as the Police denied receiving the money from the suspended Central Bank Governor, Mallam Lamido Sanusi.
Sanusi, while defending allegations of financial recklessness levelled against him by the Financial Reporting Council, had listed the sum among funds he released to the Ministry of Police Affairs to procure a helicopter and other equipment.
But the police high command, which appeared before the House of Representatives Committee on Public Accounts in Abuja, denied knowledge of the money.
The Assistant Inspector-General of Police in charge of Air Wing, Mr. Ilesanmi Aguda, who stood in for the inspector-General of Police, Mohammed Abubakar, simply replied “no knowledge” when the committee sought to confirm the payment.
Although he advised the committee to refer the inquiry to the Ministry of Police Affairs, the Chairman of the committee, Mr. Adeola Olamilekan, informed his colleagues that the said ministry had earlier denied the payment.
Olamilekan expressed surprise over the development, noting that it would appear that the money was missing since the supposed recipients had denied knowledge of it.
He said, “If the IG and the police ministry deny receipt of the said N19.7bn, then the committee can rightly assume that the money is missing, until proven otherwise.
“All the major actors involved in the alleged transaction, including the CBN have a case to answer.”
In ruling on the controversial money, the committee said it would summon Sanusi and the IG to hear from them again before taking a final position.
In a separate case, the committee summoned the Accountant-General of the Federation, Mr. Jonah Otunla; the Director-General, Budget Office of the Federation, Dr. Bright Okogu; and the CBN to explain the whereabouts of the N59.6bn released to the NNPC as subsidy claims.
While the budget office claimed to have paid the money to the NNPC, the corporation denied receiving it.
The committee acknowledged submissions by the NNPC, which indicated that it did not receive the money.
For it to dig into the matter further, the committee directed the corporation to write a formal letter denying that it received the money.
Ruling on the issue, the committee chairman said, “You (NNPC) will do us a formal letter explaining to the committee that at no time did you receive N59.6bn. The Deliotte accounting firm, in its report, claimed the fund was disbursed.
“Towards this direction, this committee hereby summons the CBN, AGF and budget office to explain why such sum of money was disbursed without any documentary evidence.
“The NNPC for now cannot be indicted until otherwise proven when the AGF and the budget office come out with evidence that the money was disbursed and cash backed.”