(A-4KU) on board
São Paulo In her first three years of service as
São Paulo, the ship completed several missions, some in foreign waters, particularly Operations
ARAEX,
PASSEX, and
TEMPEREX, which is used annually to qualify and train the
Argentine Navy's
Super Étendards and
S-2T Turbo Trackers. Toward the end of her commissioned life,
São Paulo mainly served to train pilots to fly carrier operations. She was actively used for the carrier qualification and re-qualification of rotary and fixed-wing pilots, and also to practice carrier-based attack missions. The explosion initially killed one crew member and injured ten others. All casualties were airlifted by helicopter to the
Naval Hospital Marcílio Dias in
Rio de Janeiro. Two of the injured crew later died in the hospital from their injuries. The cause of the explosion was a rupture in a steam pipeline. After this accident, the Navy decided to undertake an extensive overhaul to repair and modernize the ship.
Upgrade (2005–2010) and sea trials During 2005–10,
São Paulo underwent extensive modernization. The upgrade included repair of the
steam turbines; maintenance of the
surface condensers; retubing of
boilers; repair of two high-pressure
compressors; revision of the
AC electrical generator; purchase of spare parts; maintenance of pumps, valves, and structural items; addition of two
API oil-water separators; installation of two
water cooling units; upgrade of the
chemical oxygen generator; repair and treatment of oil tanks; substitution of the
Naval Tactical Data System, installation of a
closed-circuit television system; installation of an
IFF transponder; installation of a MAGE system (
ESM), flight deck inspection, repair, and painting; upgrade of the
Optical Landing System processing unit; and revision of the
aircraft catapults. The upgrade was completed in July 2009, and the
São Paulo was initially due to be fully operational by August 2010. Twelve Brazilian Navy A-4 Skyhawks were also scheduled to be upgraded by
Embraer at a cost of $140 million. The upgrade was similar to the ones done for the
AMX and
F-5EM aircraft of the
Brazilian Air Force. The program included restoring the aircraft and their current systems, as well as implementing new avionics, radar (specifically the
Elta 2032 radar system), power production, and autonomous oxygen generating systems. Possible weapons to be included in the upgrade were
MAA-1B,
Python 4, and
Derby AAMS. The Brazilian Navy contracted
Marsh Aviation to convert four
S-2T Turbo Trackers to an
airborne early warning (AEW) configuration, and four more for tanking and Carrier Onboard Delivery duties. According to an article in the October 2010 issue of Air Forces Monthly, it was confirmed that Brazil had purchased ex-Australian and ex-Uruguayan
C-1 Trader airframes, for conversion into AEW planes and tanker aircraft. The Brazilian Navy planned upgrades of the airframes to S-2T Turbo Tracker configuration with Honeywell
TPE 331-14GR engines. The purchase included nine airframes, of which two were for tanker conversion to refuel the AF-1 Skyhawks, and three were for AEW. The rest were purchased for spares or for cargo duties. The AEW radar requirement was to have a range of at . The operational lifespan for the airframes was to be 10 years. They were expected to be ready in 2011 and 2012.
São Paulos
SH-3 helicopter fleet was to be replaced by six
S-70B Seahawk helicopters. They were purchased in 2008, upgraded, and refurbished for delivery. The helicopters and a package of engines and support equipment were scheduled for delivery in 2009. At the end of 2010, sea trials began, and as of 2011
São Paulo had been evaluated by the CIASA (Inspection Commission and Training Advisory).
Refit and delayed decommissioning (2012–2022) São Paulo was expected to rejoin the fleet in late 2013, but suffered another major fire in 2012. In 2017, the Navy announced the ship would be demobilized and
decommissioned, citing the uneconomical cost of further repairs. The Brazilian Navy formally decommissioned
São Paulo on 22 November 2018. Scheduled to arrive at
Aliağa, Turkey on 7 September 2022 for
scrapping, the ship was towed from Rio de Janeiro on 4 August 2022 by the Dutch
tugboat Alp Centre, after being bought for R$10,550,000.00 (ca. US$ 1.9 million) from Sök. The ship and her tugboat arrived off the Moroccan coast on 26 August, preparing to enter the Mediterranean Sea through Gibraltar, when the Turkish government suddenly withdrew permission for the ship to dock in Turkey. This decision was made after officials at the Turkish Ministry of the Environment determined that the report submitted by Brazilian authorities significantly underestimated the amount of
hazardous material aboard the ship when compared to ships of the same class and period. For example, the report estimated the presence of only 9.6 tons of
asbestos when —
São Paulos sister ship — contained at least 600 tons of this carcinogenic material. The convoy reversed course and headed back to Rio de Janeiro. After the decommissioning was announced, a private foundation called (ISP) formed by former crew and enthusiasts attempted to transform the carrier into a
museum ship. Previous plans to make a museum ship of her predecessor,
Minas Gerais, had been aborted. ISP was responsible for the judicial order to tow the ship back to Brazil. Concerns over the potential risk of "massive ecological damage" were made by several national and international
environmentalist organizations. A lawyer instrumental in the ship's return characterized the overall handling of the matter as severely rushed and negligent, with authorities bypassing proper evaluation and selling the ship for a fraction of the real value. The foundation was also barred from the auction as Brazilian authorities were only interested in companies seeking to dismantle the ship. The Brazilian Navy refused to allow the ship to anchor again in Rio de Janeiro, and sent the convoy to a port in
Suape,
Pernambuco, where she was again not allowed to anchor, and had thus been waiting in the waters for a pending cleanup by the Navy.
Scuttling (2023) On 20 January 2023, the ship was seized and put out to sea by the Brazilian Navy, who declared it would
scuttle the
São Paulo into the Atlantic Ocean in February 2023, following the rejections of injunctions from
Ministry of the Environment and the
Federal Public Ministry by a federal judge. The Navy stated that the ''São Paulo's'' deteriorating condition and the "inevitability of uncontrolled sinking" gave the navy no other option, even with an offer of
R$30 million (
US$6 million) from Sela Saudi Arabian Jeddah group to buy her for three times more than the Turkish company paid. Plans to scuttle her approximately off the coast of Brazil in
international waters, 5,000 m deep, just within the outer limit of Brazil's
exclusive economic zone were announced. The Public Ministry appealed against the judicial decision, but the appeal was rejected. The Navy spent R$37.2 million to sink the decommissioned aircraft carrier
São Paulo, which had been sold for R$10 million. The former Turkish owners of the ship criticized the decision as showing indifference and attempts to evade responsibility by the Brazilian authorities. The Brazilian Navy said that her hull already had three holes in it and sinking would have been inevitable before the end of the month.
São Paulo was scuttled on 3 February 2023. ==Gallery==