Tanzania’s Air Traffic Control System

World Peace Foundation - August 17, 2020 (updated December 6, 2020)


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Of the many cases of alleged bribery that BAE Systems, the United Kingdom’s leading defense firm, was accused of over the last decades, only one survived political interference and finally made its way to a UK court. In 2001, the company had signed a contract with Tanzania to supply two ‘Watchman’ radar systems to monitor the country’s airspace for a cost of GBP 28 million. The deal was controversial even before its finalization, with the World Bank and International Civil Aviation Organization warning that the Watchman, primarily a military radar, was over-priced and ill-suited for use as a civil air traffic control system. The British cabinet split publically over whether to grant an export license for the radar system, but the sale was ultimately approved with the support of Prime Minister Tony Blair. Investigations revealed that BAE had payed USD 12 million to an agent, almost certainly to be distributed in bribes to Tanzanian officials, to secure the deal.

Case details

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Seller country United Kingdom
Seller company BAE Systems
Buyer country Tanzania
Goods category Surveillance Equipment
Equipment sold 2 Watchman Radar Systems
Deal value Initial Price: GBP 28 million
Start year 1992
Outcome status Out of Court Settlement

Dramatis Personae

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  • Sailesh (or Shailesh) Pragji Vithlani – agent working first for Siemens Plessey, the manufacturer of the Watchman, and later its new owner, BAE Systems; suspected of paying bribes to Tanzanian officials, later charged in Tanzania with perjury. Fled the country.

  • Tanil Kumar Chandulal Somaiya – agent and business partner of Vithlani. Held power of attorney over company used to transmit bribes.

  • Andrew John Chenge – Attorney General of Tanzania (1993-2005) at the time of the arms deal, subsequently Minister of Infrastructure (2006-2008); signed off on the terms of the loan which financed the purchase. Suspected bribe taker; resigned in 2008 from position as minister of infrastructure.

  • Idriss (or Idrissa) Rashidi – Governor of the Bank of Tanzania (1993-1998); signed off on the terms of the financing loan. Suspected as a bribe taker.

Summary of Corruption Allegations

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To secure the deal, BAE Systems paid USD 12 million to their agent Sailesh Vithlani through their off-shore trading company Red Diamond, which is registered in the British Virgin Islands and associated with several other allegedly corrupt BAE exports. The money paid to Vithlani is likely to have been distributed in bribes to Tanzanian officials. In particular, Andrew Chenge, Attorney General at the time of the deal, who signed off on the terms of the associated loan, was suspected by the UK Serious Fraud Office (SFO) of receiving bribes.

In November 2001, Tanzania was granted USD 3 billion in debt relief by international donors. The World Bank and IMF, as a condition of debt relief, required Tanzania to allow the two institutions to review the acquisition of the air traffic control system. In December 2001, the World Bank—relying on advice from the International Civil Aviation Organization—was reportedly pressuring Tanzania to cancel the deal and to purchase a cheaper civil air traffic control system—lacking the military functions of the Watchman—for as little as USD 10 million. The European Investment Bank was also prepared to offer a cheaper loan for a civilian alternative. Nonetheless, after the British cabinet approved the export license for the Watchman units, Tanzania opted to continue with the original program.


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  • 1990

    Tanzania recognized that it needed modern air traffic control radar since at least 1990, when coverage failed over the capital Dar es Salaam.

  • 1992

    Tanzania launched a search for a new supplier and selected Siemens Plessey Systems the following year. Bankers Trust offered to hold the entirety of the country’s gold reserves as security over a ten-year period while Tanzania paid off the radar system using future cash generated through gold exports; negotiations foundered, however, over the objections of the Tanzanian Central Bank.

  • Sep 1997

    While a conditional contract worth USD 88 million was signed, it never entered into force. Around the same time, Siemens Plessey was bought by BAE Systems and renamed British Aerospace Defence Systems Ltd.

  • 1999

    Tanzania and BAE Systems finalized a deal for the sale of two Watchman radar units, commonly used for both military and civil air defense purposes, at the price of GBP 28 million, with the help of a commercial loan from Barclays Bank. This loan was offered at rates lower than normal for commercial debt, but far above those typical of a financial assistance package for developing countries. Tanzania claimed at the time that increased air usage taxes would net the country several million dollars in additional revenue each year.

Investigation Outcomes

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  • 2001

    The air traffic control deal was controversial from its very beginnings, and as early as 2001 the UK secretary for international development, Clare Short, had suggested that the project was corrupt.

  • 2004

    The UK’s Serious Fraud Office (SFO) began investigating a set of BAE’s sales, and confirmed that it was looking into the Tanzanian radar deal specifically in 2006.

  • 2007

    Early in the year, a journalist claimed to have extracted a candid confession from Sailesh Vithlani, BAE System’s alleged agent, of acting as an intermediary for the payment of USD 12 million in bribes for the radar deal.

  • 2008

    According to a request for mutual legal assistance sent to Tanzanian authorities, the SFO suspected that Vithalni had received 30% of the value of the radar deal from BAE through companies registered in tax havens. The two Tanzanian officials named by the SFO in its investigation as likely bribe-takers were Andrew Chenge, the attorney general, and Idriss Rashidi, formerly the governor of the Bank of Tanzania. Chenge was a key decision-maker in the negotiations because his signature was required to meet Barclays Bank’s demand that disputes arising from the commercial loan be adjudicated under English law. He allegedly received USD 1.5 million for his support.

  • 2008

    After the request for assistance was leaked, Chenge stepped down from his new role as minister of infrastructure. In fact, the Prevention and Combating of Corruption Bureau (PCCB) of Tanzania was already pursuing its own case against Vithlani and at least one other figure as early as 2007, according to U.S. diplomatic cables released by the Wikileaks website. Political pressure, however, appears to have suppressed the investigation.

  • 2010

    The SFO took BAE Systems to court, and settled for a plea bargain with the defendant. The company admitted to an accounting wrongdoing stemming from its misleading description of the payments to Vithlani as “technical services.” The SFO did not attempt to establish that Vithlani had paid the money onward as bribes, or that any of the monies were otherwise improperly used. In the course of the trial, the presiding judge stated that it was “naïve in the extreme” to believe that BAE Systems had not committed bribery and was “astonished” that the SFO had not been able to present evidence to support a charge. BAE Systems agreed to pay a token fine of GBP 500,000, and to make an ex-gratia payment of GBP 29.5 million to the Tanzanian people. In exchange the SFO pledged to drop all of its investigations into the company’s past potential wrongdoings in this and other cases. The Campaign Against the Arms Trade and The Cornerhouse unsuccessfully brought a legal case alleging that the SFO should have charged BAE Systems with corruption. Initially, the vague wording of the settlement allowed BAE to pay this donation in any way they saw fit, but following objections in Parliament, the donated funds were placed under the management of the Department for International Development (DfID).

  • 2012

    The money was eventually paid out to fund education programs in Tanzania.

  • Jan 2016

    The Tanzanian investigation has not yet led to the prosecution of any bribe-takers, and Andrew Chenge continued serving in parliament. Beginning of 2016 he was elected as the legislature’s chairman. Vithlani faces charges of perjury in Tanzania, and was at one point—but no longer—listed as a wanted man by Interpol.

  • Jul 2016

    Tanzania’s Civil Aviation Authority announced that it was looking to purchase a new radar system for the airport at Dar es Salaam and was likely to spend between TZS 12 and 16 billion (USD 5 to 7 million) on the acquisition.


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