SDR ASAA2019021928235

Service difficulty report · Manifold · Boeing 737990ER

Difficulty date: February 19, 2019
Submitted: February 20, 2019
Operation: Air carrier
Aircraft: N495AS
Make and model: Boeing 737990ER
Aircraft serial: 41728
Aircraft time: 11,970 hours, 3,940 cycles
Engine: Cfmint CFM567B27E
System (JASC): 7520 · Engine Cooling System
Part: Manifold
Part number: 3400276030
Condition: Damaged
Location: Engine #2
Stage of operation: IN
How discovered: V
Nature of condition: O
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

FOUND CHAFE DAMAGE ON OTBD DUCT MANIFOLD - AIR (P/N 340-027-603-0) AND CLAMP, HINGED (P/N 649-411-726-0) OF #2 ENGINE (T/R). GROUNDED - YES. ACCOMPLISHED ALTERNATE DEACTIVATION REF ALASKA CHPT. 5 MANUAL SECTION 5-07-01 TABLE 3 ITEMS 4,8,9 & 10. OPENED #2 ENGINE THRUST REVERSERS REF B737-900 AMM 78-31-00. 36205. REMOVED AND REPLACED MANIFOLD DUCT AND CLAMP PER CFM 72-00-00-420-116. REVERSED ALT. DEACTIVATION PROCEDURES. CLOSED #2 ENG T/R.