Word.ws English Dictionary

core lock

core lock noun: seizure of a turbine engine due to misalignment and loss of clearance between stationary and rotating components, caused by different components cooling and contracting at different rates following engine shutdown or flameout.

Noun

core lock (uncountable)

  1. Seizure of a turbine engine due to misalignment and loss of clearance between stationary and rotating components, caused by different components cooling and contracting at different rates following engine shutdown or flameout.
    • The lack of core rotation on the accident airplane engines was similar to the instances of core lock experienced by CF34 engines during Bombardier’s acceptance testing, except that the accident airplane engines were exposed to more severe thermal distress than the engines on the production...2007 January 9, National Transportation Safety Board, “2.2.3 Double Engine Failure”, in Aircraft Accident Report: Crash of Pinnacle Airlines Flight 3701, Bombardier CL-600-2B19, N8396A, Jefferson...

Verb

core lock (third-person singular simple present core locks, present participle core locking, simple past and past participle core locked)

  1. To experience core lock.
    • As testimony during the Safety Board’s June 2005 public hearing on the Pinnacle Airlines accident indicated, neither Bombardier nor GE considered core lock to be a safety-of-flight issue. The manufacturers claimed that engines that passed the screening procedure, with or without grind-in rework...2007 January 9, National Transportation Safety Board, “1.18.2 Core Lock”, in Aircraft Accident Report: Crash of Pinnacle Airlines Flight 3701, Bombardier CL-600-2B19, N8396A, Jefferson City...

Forms of core lock

third-person singular presentcore locks
present participlecore locking
past participlecore locked
pastcore locked

Questions about core lock

What does core lock mean?
Core lock means seizure of a turbine engine due to misalignment and loss of clearance between stationary and rotating components, caused by different components cooling and contracting at different rates following engine shutdown or flameout.
What part of speech is core lock?
Core lock can be a noun or a verb.

Words near core lock in the dictionary

  1. core hours
  2. core inflation
  3. core inflations
  4. core lane
  5. core lanes
  6. core lock
  7. core locked
  8. core locking
  9. core locks
  10. core loop
  11. core loops

Source and license

Adapted from Wiktionary: core lock (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “core lock.” Word.ws, https://word.ws/core_lock. Based on Wiktionary, CC BY-SA 4.0.