It said in a statement that while it appreciated the Singaporean Ministry of Transport’s efforts at promoting transparency by releasing the documents on Dec 4, there were other documents that were not disclosed.

“The disclosure is only partial and selective with the primary aim of influencing public opinion,” the statement said.

It urged Singapore’s Transport Ministry to also release the letters from the Civil Aviation Authority of Malaysia (CAAM) to its Singaporean counterpart, the Civil Aviation Authority of Singapore (CAAS), dated Oct 9, Nov 15, Nov 21 and Nov 28 of this year.

“Failing to do so, we are prepared to release the letters for full disclosure of such information for the public’s comprehension of our stand on the same,” the statement said.

The ILS is a landing navigation aid to guide aircraft to a runway.

Transport Minister Loke Siew Fook said that Singapore’s Seletar Airport’s new ILS is encroaching into the Pasir Gudang airspace.

Loke said Malaysia was not opposed to the development of Seletar Airport but is saying no to its ILS operating within Johor airspace. He said the government conveyed this message to Singapore on Nov 28 and Nov 29.

He said Singapore’s broadcasting of the ILS in the Aeronautical Information Publication (AIP) on Dec 1 which will be enforced on Jan 3, is against the principle of national sovereignty as accorded under the Convention on International Civil Aviation (Chicago Convention 1944).

Loke, however, said Malaysia would not take a confrontational approach over the matter and the government was prepared to meet with Singaporean authorities to begin discussions and negotiations.