LAX85IA297

NTSB incident investigation · Boeing 737-247 · Los Angeles, CA · June 27, 1985

Incident · No injuriesIncident investigationFinal report
Date
June 27, 1985, 15:32 local (22:32 UTC)
Place
Los Angeles, CA
Injuries
96 uninjured
Damage
Minor damage
Phase of flight
Enroute
Aircraft
N473ACBoeing 737-247
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Case key
24562

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Airframe/component/system failure/malfunctionCruise - normal
Hydraulic system,shutoff valve - switched off
InattentivePilot in command
Hydraulic system,seal - separation
Hydraulic system,pump - fatigue
Flt control syst,wing flap control - inoperative

Analysis

The captain stated that the 'b' hydraulic system low oil leval lamp illuminated while the acft was in cruise flt. As he completed the failure check and placed the 'b' system into standby rudder condition that provides hydraulic pressure to only the rudder, the 'a' hydraulic system failed. The flightcontinued to it's destination and when the crew was unable to lower the trailing edge flaps, due to another malfunction, landed without incident.

Aircraft

Registration
N473AC
Reported as
Boeing 737-247
Category
Airplane
Serial number
19614
Engine
P&W JT80, 14,500 lbs thrust, turbo fan
Damage
Minor damage
Flight
Part 121
Registered owner
Air Cal
Airworthiness certificate
Standard, Transport
Departed
SFO · San Francisco, CA
Destination
LAX · Los Angeles, CA
Flight plan
IFR
Airport
LAX · Los Angeles Intl, runway 25L, 1,196 × 200 ft, concrete

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
51
Certificates
Airline transport, Flight instructor
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
11,532 total · 4,075 in this make and model · 10,612 as pilot in command · 208 in the last 90 days · 71 in the last 30 days · 7 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
250° at 9 knots
Visibility
4 statute miles
Lowest ceiling
None
Temperature
72 °F, dew point 59 °F
Altimeter
29.00 inHg
Observed at
LAX